staging: rtl8723au: cfg80211_rtw_connect(): Remove obfuscating pointers

dst_ssid and dst_bssid were just obfuscating that we were in fact
looking at pnetwork.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>