Remove redundant prints during rpm installation

Those stdout prints are invalid and doesn't assist to the user.
If configure fails vdsmd won't start and the user will need to
investigate it. But stdout prints in the installation phase won't
assist.

Change-Id: I5284009f1f04382b0cae73a16d1650d54d7649ea
Signed-off-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/30667
Reviewed-by: Dan Kenigsberg <danken@redhat.com>