qcacld-3.0: Finish removing WLAN_FEATURE_NAN_CONVERGENCE
Changes I0045dcccd36524cbcd4253347c9e0a5704193c2b ("qcacmn: Combine
all NAN related flags with WLAN_FEATURE_NAN") and
If98ecaace17f8724e9c28325ef61e721f42e1d8f ("qcacld-3.0: Combine all
NAN related flags with WLAN_FEATURE_NAN") removed all usage of
WLAN_FEATURE_NAN_CONVERGENCE, but did not remove it from Kconfig or
from all defconfigs, so do that now.
Change-Id: Ib19f30d2be5c2ddaad13a2526442d3d7266e4754
CRs-Fixed: 3487376