Remove unneeded .moc includes

[5/8] Automatic MOC for target krfb_events_x11

AutoMoc warning

"~/dev/kde/krfb/events/x11/x11events.cpp"

The file includes the moc file "x11events.moc",
but does not contain a Q_OBJECT, Q_GADGET,
Q_NAMESPACE, K_PLUGIN_FACTORY,
K_PLUGIN_FACTORY_WITH_JSON or
K_PLUGIN_CLASS_WITH_JSON macro.

AutoMoc: ~/dev/kde/krfb/events/x11/x11events.cpp:0:
Note: No relevant classes found. No output generated.