ecore_evas/wayland: Remove hack for changed state.

ecore_evas/wayland: Remove hack for changed state.

Since we don't have a changed state callback on Wayland, just call the
changed_state callback of Ecore_Evas from the configure callback.
There's no need to add the Ecore_Job that will send the event later.

This makes the code cleaner, simpler, and will call the callback when
the configure event is received, which is a good place to check for the
changes.