[EFL] Unreviewed Gardening.

Marking compositing reftests added in r148172 as ImageOnlyFailure.
Also, skip failing tests on EFL bots.

* platform/efl/TestExpectations:
* platform/efl/compositing/geometry/foreground-layer-expected.txt: Removed.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148747 268f45cc-cd09-0410-ab3c-d52691b4dbfc