p2p: Fix for GC unable to scan GO after tear down.

A start of the search is not done on a group removed
broadcast event for mLastGroupFormed being set, which
would result in the Group Client not able to find the
GO , though a p2p_find is issued before a disconnect.
This is due to the fact that supplicant shall notify
the p2p device info only once per p2p_find.

To avoid this remove the conditions that is blocking
the search to happen and issue another p2p_find.

Change-Id: I4abad5c472808f9aa03e644eb1c6a26bfab8a4e6
CRs-Fixed: 504022