[Qt] Unreviewed gardening.

* platform/qt/TestExpectations: Skip failing test after r145100.
* platform/qt/compositing/overflow/composited-scrolling-paint-phases-expected.txt: Rebaselining after r145067.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145192 268f45cc-cd09-0410-ab3c-d52691b4dbfc