Neater Megatronics 3 pins

Marlin/pins_MEGATRONICS_3.h

@@ -143,11 +143,14 @@
 #define BTN_ENC            33
 
 #if ENABLED(REPRAPWORLD_GRAPHICAL_LCD)
+
   #define LCD_PINS_RS      56 // CS chip select / SS chip slave select
   #define LCD_PINS_ENABLE  51 // SID (MOSI)
   #define LCD_PINS_D4      52 // SCK (CLK) clock
   #define SD_DETECT_PIN    35
+
 #else
+
   #define LCD_PINS_RS      32
   #define LCD_PINS_ENABLE  31
   #define LCD_PINS_D4      14
@@ -176,14 +179,14 @@
   #define SPINDLE_LASER_ENABLE_PIN 43  // Pin should have a pullup!
   #define SPINDLE_DIR_PIN          42
 #elif EXTRUDERS <= 2
-  // try to hijack the last extruder so that we can get the PWM signal off the Y breakout
-  // move all the Y signals to the E2 extruder socket - makes dual Y steppers harder
-  #undef Y_ENABLE_PIN
-  #undef Y_STEP_PIN
-  #undef Y_DIR_PIN
-  #undef E2_STEP_PIN
-  #undef E2_ENABLE_PIN
-  #undef E2_DIR_PIN
+  // Hijack the last extruder so that we can get the PWM signal off the Y breakout
+  // Move Y to the E2 plug. This makes dual Y steppers harder
+  #undef Y_ENABLE_PIN  //  4
+  #undef Y_STEP_PIN    //  5
+  #undef Y_DIR_PIN     // 17
+  #undef E2_ENABLE_PIN // 23
+  #undef E2_STEP_PIN   // 22
+  #undef E2_DIR_PIN    // 60
   #define Y_ENABLE_PIN             23
   #define Y_STEP_PIN               22
   #define Y_DIR_PIN                60