ProjectExplorer: De-qobject-ify RunConfigurationFactory

Some translations moved over to the corresponding RunConfigurations,
one setParent() replaced by direct deletion.

Change-Id: Ib5e527b71353a6be70b332ac2dfd2f5cd2499a60
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/qmlprojectmanager/qmlprojectplugin.h

@@ -42,6 +42,8 @@ public:
 private:
     bool initialize(const QStringList &arguments, QString *errorString) final;
     void extensionsInitialized() final {}
+
+    class QmlProjectRunConfigurationFactory *m_rcFactory = nullptr;
 };
 
 } // namespace Internal