ReplicatedPG: remove assert in remove_watcher
ReplicatedPG: remove assert in remove_watcher

notif is not in notif->session->notifs.

Signed-off-by: Samuel Just <4c46b94684b338bae1ed5e7e1321718dd75401cc@dreamhost.com>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph