Disabled the kill button (T1953)

This fix will prevent the printer from halting if the push button
on the LCD is depressed. Since this button is inaccessible on our
printers, it is better to disable it.

Marlin/Conditionals_LulzBot.h

@@ -1886,6 +1886,7 @@
     #define LULZBOT_SCROLL_LONG_FILENAMES
     #define LULZBOT_BABYSTEP_ZPROBE_GFX_OVERLAY
     #define LULZBOT_THIN_OVERLAY_ARROWS
+    #define LULZBOT_DISABLE_KILL_BUTTON
 #endif
 
 /* Marlin requires static PSTRs to display on the LCD display, because of this */

Marlin/pins_MINIRAMBO.h

@@ -140,7 +140,7 @@
 //
 #if ENABLED(ULTRA_LCD)
 
-  #if !MB(MINIRAMBO_10A)
+  #if !MB(MINIRAMBO_10A) && !defined(LULZBOT_DISABLE_KILL_BUTTON)
     #define KILL_PIN       32
   #endif
 

Marlin/pins_RAMBO.h

@@ -199,7 +199,9 @@
 //
 #if ENABLED(ULTRA_LCD)
 
+  #if !defined(LULZBOT_DISABLE_KILL_BUTTON)
   #define KILL_PIN 80
+  #endif
 
   #if ENABLED(NEWPANEL)