There is no need to decorate all tests with RequireDummyMod

This is since setupModule already needs the dummy module to be loaded in order
to add dummy links. So even tests that are not decorated with RequireDummyMod
actually require it.

Change-Id: I03c9b2028ba684a274184fbaaa6a7bbf78992d01
Signed-off-by: ibarkan <ibarkan@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/36050
Reviewed-by: Dan Kenigsberg <danken@redhat.com>