Item12942: Temporarily disabling some tests

The test fails,  but then the test framework fails to restore the
overridden log time subroutine, and other tests go into infinite loops.

git-svn-id: http://svn.foswiki.org/trunk/UnitTestContrib@17768 0b4bb1d4-4e5a-0410-9cc4-b2b747904278