Skip raw moves to current position

Marlin/Marlin_main.cpp

     #if ENABLED(DEBUG_LEVELING_FEATURE)
       if (DEBUGGING(LEVELING)) DEBUG_POS("prepare_uninterpolated_move_to_destination", destination);
     #endif
+
+    if ( current_position[X_AXIS] == destination[X_AXIS]
+      && current_position[Y_AXIS] == destination[Y_AXIS]
+      && current_position[Z_AXIS] == destination[Z_AXIS]
+      && current_position[E_AXIS] == destination[E_AXIS]
+    ) return;
+
     refresh_cmd_timeout();
     inverse_kinematics(destination);
     planner.buffer_line(delta[A_AXIS], delta[B_AXIS], delta[C_AXIS], destination[E_AXIS], MMS_SCALED(fr_mm_s ? fr_mm_s : feedrate_mm_s), active_extruder);