Get rid of "#if 0" and skipped tests in QPainter autotest.

Get rid of "#if 0" and skipped tests in QPainter autotest.

qt_format_text_clip() and qt_format_text_boundingrect() have been
skipped ever since they were originally added to git, so I see no point
in keeping them.

The #if 0 in setEqualClipRegionAndPath() was ifdefed out from when that
specific test case was added (maybe it was failing to begin with?), but
it passes now, so we should enable it.

Change-Id: I6551e3b5612a4d4b00a969511af6abc85db43892
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>