qcacld-3.0: Remove obsolete gNthBeaconFilter from WLAN ini

Currently the WLAN ini file contains a "gNthBeaconFilter" setting that
was only applicable for a prior version of WLAN HW/SW.  Remove this
obsolete setting to avoid confusion.

Change-Id: I53ffc9f25ecd60e04eaf86029eeaa8763f8707fd
CRs-Fixed: 1050635

config/WCNSS_qcom_cfg.ini

@@ -68,11 +68,6 @@ gAddTSWhenACMIsOff=1
 gNumRxAnt=1
 
 
-# Beacon filtering frequency (unit in beacon intervals)
-
-gNthBeaconFilter=50
-
-
 # Enable WAPI or not
 
 # WAPIIsEnabled=0