qcacld-3.0: Remove unnecessary log from wlansap_roam_callback
wlansap_roam_callback function logging an error message if
roam_status is not handled, in default case of switch, but same
information is logged before switch. So remove this log.
Change-Id: Id53eb392929d9328f959c7e54d7f0a5dd77b0739
CRs-Fixed: 2007415