packaging: setup: Ask to remove engine only if enabled

Change-Id: I8d6b938b0635e30eeb10c4e10371eccf07987ecd
Bug-Url: https://bugzilla.redhat.com/1060529
Signed-off-by: Yedidyah Bar David <didi@redhat.com>
(cherry picked from commit b84f6880e800b444c62d93311168b2d0085a6c40)