Move note about LiquidTWI2 to Configuration.h (PR#2406)

Marlin/Conditionals.h

 
   // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
   #ifdef LCD_I2C_PANELOLU2
-    // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-    // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-    // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-    // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-    //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
     #define LCD_I2C_TYPE_MCP23017
     #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
     #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD

Marlin/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/configurator/config/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/Felix/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/Felix/Configuration_DUAL.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/Hephestos/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/K8200/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/SCARA/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/WITBOX/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/adafruit/ST7565/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/delta/biv2.5/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/delta/generic/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/delta/kossel_mini/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/delta/kossel_pro/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/makibox/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs

Marlin/example_configurations/tvrrug/Round2/Configuration.h

 //#define LCD_I2C_SAINSMART_YWROBOT
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+//
+// This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+// Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+// (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+// Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+//       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
 //#define LCD_I2C_PANELOLU2
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs