Simplify G26 user_canceled

Marlin/G26_Mesh_Validation_Tool.cpp

   #if ENABLED(NEWPANEL)
 
     /**
-     * Detect is_lcd_clicked, debounce it, and return true for cancel
+     * If the LCD is clicked, cancel, wait for release, return true
      */
     bool user_canceled() {
       if (!is_lcd_clicked()) return false; // Return if the button isn't pressed
-
-      #if ENABLED(ULTRA_LCD)
-        lcd_setstatusPGM(PSTR("Mesh Validation Stopped."), 99);
+      lcd_setstatusPGM(PSTR("Mesh Validation Stopped."), 99);
+      #if ENABLED(ULTIPANEL)
         lcd_quick_feedback();
       #endif
-
-      safe_delay(10);                      // Wait for click to settle
-      while (!is_lcd_clicked()) idle();    // Wait for button press again?
-
-      // If the button is suddenly pressed again,
-      // ask the user to resolve the issue
-      lcd_setstatusPGM(PSTR("Release button"), 99); // will never appear...
       wait_for_release();
-      lcd_reset_status();
       return true;
     }