Revert "clutter test: add omit to easing_delay test"

This reverts commit eb4e3a8ef298d71e2e22cef6636f786f760e1bd6.

This workaround is too facile solution.
More investigation is needed.
clutter test: suppress clutter warning

Clutter-WARNING **:You must call clutter_actor_save_easing_state() prior
to calling clutter_actor_set_easing_delay().