Fix a probe pin definition

Marlin/src/pins/pinsDebug_list.h

 #if PIN_EXISTS(Z_MS2)
   REPORT_NAME_DIGITAL(__LINE__, Z_MS2_PIN)
 #endif
-#if PIN_EXISTS(Z_PROBE)
-  REPORT_NAME_DIGITAL(__LINE__, Z_PROBE_PIN)
-#endif
 #if PIN_EXISTS(Z_STEP)
   REPORT_NAME_DIGITAL(__LINE__, Z_STEP_PIN)
 #endif

Marlin/src/pins/pins_RURAMPS4D.h

 //#define Z2_MS3_PIN         ?   // shared with E3_MS3_PIN
 
 #if DISABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN)
-  #define Z_PROBE_PIN      49
-#endif // else Z_PROBE_PIN = Z_MIN_PIN
+  #define Z_MIN_PROBE_PIN  49
+#endif
 
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #ifndef FIL_RUNOUT_PIN