qcacld-3.0: Remove undef of macro SET_CHAN_CHANNEL_COUNT

Change Ia09638f59aeea4d87bbd6d4f9ab03210a213a132 ("qcacld-3.0: Correct
vendor attribute for external ACS") removed the define of macro
SET_CHAN_CHANNEL_COUNT, but left behind the associated undef. Since
the undef is pointless, remove it.

Change-Id: Ifbe3bc717138ff839d9ed5ae2a125a8c8a29300c
CRs-Fixed: 2376939

core/hdd/src/wlan_hdd_cfg80211.c

@@ -9581,7 +9581,6 @@ static int hdd_parse_vendor_acs_chan_config(struct hdd_vendor_chan_info
  * Undef short names for vendor set channel configuration
  */
 #undef SET_CHAN_REASON
-#undef SET_CHAN_CHANNEL_COUNT
 #undef SET_CHAN_CHAN_LIST
 #undef SET_CHAN_PRIMARY_CHANNEL
 #undef SET_CHAN_SECONDARY_CHANNEL