Remove mistake changes in CuraEngineBackend

plugins/CuraEngineBackend/CuraEngineBackend.py

@@ -180,7 +180,7 @@ class CuraEngineBackend(QObject, Backend):
     #   \return list of commands and args / parameters.
     def getEngineCommand(self) -> List[str]:
         json_path = Resources.getPath(Resources.DefinitionContainers, "fdmprinter.def.json")
-        command = [self._application.getPreferences().getValue("backend/location"), "connect", "127.0.0.1:{0}".format(self._port), "-j", json_path, "-m1"]
+        command = [self._application.getPreferences().getValue("backend/location"), "connect", "127.0.0.1:{0}".format(self._port), "-j", json_path, ""]
 
         parser = argparse.ArgumentParser(prog = "cura", add_help = False)
         parser.add_argument("--debug", action = "store_true", default = False, help = "Turn on the debug mode by setting this option.")