qcacld-3.0: Fix IPA backward compatibility

Fix IPA WDI 1.0 update for overwrite of previous commit and use
only QCA_WIFI_3_0 build flag for qcacld-3.0.

Change-Id: I3bff4a4e10102e97aeb57fb0f67d48933e0bae9b
CRs-fixed: 994144

Kbuild

@@ -946,10 +946,6 @@ CDEFINES += -DADRASTEA_SHADOW_REGISTERS
 CDEFINES += -DADRASTEA_RRI_ON_DDR
 endif
 
-ifneq (y,$(filter y,$(CONFIG_CNSS_EOS) $(CONFIG_ICNSS) $(CONFIG_CNSS_ADRASTEA)))
-CDEFINES += -DQCA_WIFI_2_0
-endif
-
 ifeq ($(CONFIG_WLAN_FASTPATH), y)
 CDEFINES +=	-DWLAN_FEATURE_FASTPATH
 endif