Suppress emergency parser G-code errors

Co-Authored-By: srieche <srieche@users.noreply.github.com>

Marlin/src/gcode/gcode.cpp

         case 108: M108(); break;                                  // M108: Cancel Waiting
         case 112: M112(); break;                                  // M112: Emergency Stop
         case 410: M410(); break;                                  // M410: Quickstop - Abort all the planned moves.
+      #else
+        case 108: case 112: case 410: break;
       #endif
 
       #if ENABLED(HOST_KEEPALIVE_FEATURE)