Remove extra G42

Marlin/src/gcode/gcode.cpp

 
       case 92: G92(); break;                                      // G92: Set current axis position(s)
 
-      #if HAS_MESH
-        case 42: G42(); break;                                    // G42: Coordinated move to a mesh point
-      #endif
-
       #if ENABLED(CALIBRATION_GCODE)
         case 425: G425(); break;                                  // G425: Perform calibration with calibration cube
       #endif