cfg80211: reg: remove useless non-NULL check

There's no way that the alpha2 pointer can be NULL, so
no point in checking that it isn't.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/wireless/reg.c

@@ -501,9 +501,6 @@ static void reg_regdb_query(const char *alpha2)
 {
 	struct reg_regdb_search_request *request;
 
-	if (!alpha2)
-		return;
-
 	request = kzalloc(sizeof(struct reg_regdb_search_request), GFP_KERNEL);
 	if (!request)
 		return;