Cleanup: Remove non-existent Red Hat emails

Removed email entries that no longer exist in Red Hat.
If these individuals work on oVirt from different accounts, they should
be added in a separate patch.

Change-Id: If3876202979e12a3437b1265bb0733c1c22308ea
Signed-off-by: Allon Mureinik <amureini@redhat.com>