Clean up RUMBA pins conditions

Marlin/pins_RUMBA.h

 #define PS_ON_PIN          45
 #define KILL_PIN           46
 
-#if (TEMP_SENSOR_0==0)
+#if TEMP_SENSOR_0 == 0
   #define TEMP_0_PIN           -1
   #define HEATER_0_PIN         -1
 #else
   #define HEATER_0_PIN          2   // EXTRUDER 1
-  #if (TEMP_SENSOR_0==-1)
+  #if TEMP_SENSOR_0 == -1
     #define TEMP_0_PIN          6   // ANALOG NUMBERING - connector *K1* on RUMBA thermocouple ADD ON is used
   #else
     #define TEMP_0_PIN         15   // ANALOG NUMBERING - default connector for thermistor *T0* on rumba board is used
   #endif
 #endif
 
-#if (TEMP_SENSOR_1==0)
+#if TEMP_SENSOR_1 == 0
   #define TEMP_1_PIN           -1
   #define HEATER_1_PIN         -1
 #else
   #define HEATER_1_PIN          3   // EXTRUDER 2
-  #if (TEMP_SENSOR_1==-1)
+  #if TEMP_SENSOR_1 == -1
     #define TEMP_1_PIN          5   // ANALOG NUMBERING - connector *K2* on RUMBA thermocouple ADD ON is used
   #else
     #define TEMP_1_PIN         14   // ANALOG NUMBERING - default connector for thermistor *T1* on rumba board is used
   #endif
 #endif
 
-#if (TEMP_SENSOR_2==0)
+#if TEMP_SENSOR_2 == 0
   #define TEMP_2_PIN          -1
   #define HEATER_2_PIN        -1
 #else
   #define HEATER_2_PIN         6    // EXTRUDER 3
-  #if (TEMP_SENSOR_2==-1)
+  #if TEMP_SENSOR_2 == -1
     #define TEMP_2_PIN         7    // ANALOG NUMBERING - connector *K3* on RUMBA thermocouple ADD ON is used <-- this can not be used when TEMP_SENSOR_BED is defined as thermocouple
   #else
     #define TEMP_2_PIN         13   // ANALOG NUMBERING - default connector for thermistor *T2* on rumba board is used
 //optional for extruder 4 or chamber: #define TEMP_X_PIN         12   // ANALOG NUMBERING - default connector for thermistor *T3* on rumba board is used
 //optional FAN1 can be used as 4th heater output: #define HEATER_3_PIN       8    // EXTRUDER 4
 
-#if (TEMP_SENSOR_BED==0)
+#if TEMP_SENSOR_BED == 0
   #define TEMP_BED_PIN        -1
   #define HEATER_BED_PIN      -1
 #else
   #define HEATER_BED_PIN       9    // BED
-  #if (TEMP_SENSOR_BED==-1)
+  #if TEMP_SENSOR_BED == -1
     #define TEMP_BED_PIN       7    // ANALOG NUMBERING - connector *K3* on RUMBA thermocouple ADD ON is used <-- this can not be used when TEMP_SENSOR_2 is defined as thermocouple
   #else
     #define TEMP_BED_PIN      11    // ANALOG NUMBERING - default connector for thermistor *THB* on rumba board is used