Qt5 CI: Don't run tests that are meant to fail anyways

There is no point in running these tests if we know they are going
to fail. Tests can be enabled again when all the modules that are
currently failing have their tests passing.

Change-Id: I6fbabde8868cddcd8aa269a047d6faedea37969b
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>