Implement MEGA PRO inbuilt 4 point leveling

Marlin/src/lcd/anycubic_touchscreen.cpp

@@ -2286,6 +2286,7 @@ void AnycubicTouchscreenClass::GetCommandFromTFT() {
                     WRITE(HEATER_0_PIN, 0);
                   }
                   break;
+            #endif
                 case 51:
                   if (CodeSeen('H')) {
                     queue.enqueue_now_P(PSTR("G1 Z5 F500"));
@@ -2310,9 +2311,7 @@ void AnycubicTouchscreenClass::GetCommandFromTFT() {
                   else if (CodeSeen('L')) {
                     queue.enqueue_now_P(PSTR("G1 X100 Y100  Z50 F5000"));
                   }
-                }
                 break;
-            #endif
           default:
               break;
           }