qcacld-3.0: Kconfig: Remove PRIMA_WLAN_OKC

The PRIMA_WLAN_OKC feature is not applicable to qcacld-3.0, so remove
the feature flag.

Change-Id: Ia0dcfd34c18c31ecb6a270ede6f398160772cef7
CRs-Fixed: 3487374

Kconfig

@@ -13,10 +13,6 @@ config QCACLD_WLAN_LFR3
 	bool "Enable the WLAN Legacy Fast Roaming feature Version 3"
 	default n
 
-config PRIMA_WLAN_OKC
-	bool "Enable the Prima WLAN Opportunistic Key Caching feature"
-	default n
-
 config WLAN_FEATURE_11W
 	bool "Enable the WLAN 802.11w Protected Management Frames feature"
 	default n