qcacld-3.0: Remove unwanted NULL check in csr_process_nss_update_req

NULL check is not required as already check is present in caller
API sme_process_command

Change-Id: I7d1d6253d77faf427b7fd231dce7d1c8eac9538a
CRs-Fixed: 2139896

core/sme/src/csr/csr_api_roam.c

@@ -20606,10 +20606,6 @@ void csr_process_nss_update_req(tpAniSirGlobal mac, tSmeCmd *command)
 	struct sir_beacon_tx_complete_rsp *param;
 	struct csr_roam_session *session;
 
-	if (!command) {
-		sme_err("nss update param is NULL");
-		goto fail;
-	}
 
 	if (!CSR_IS_SESSION_VALID(mac, command->sessionId)) {
 		sme_err("Invalid session id %d", command->sessionId);