Remove unnecessary InterfacesAdded signals

Remove ObjectManager signals emitted before a bus name is owned.

This isn't necessary now that the system_manager can detect objects via
NameOwnerChanged.

Change-Id: Ia2b626a926392b50d20c26474e6c9a9fdb3ca2f0
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
6 files changed