iwlwifi: tid_data is taken twice in iwl_trans_pcie_tx_agg_alloc

Remove this redundancy.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c

@@ -559,7 +559,6 @@ int iwl_trans_pcie_tx_agg_alloc(struct iwl_trans *trans,
 	tid_data->agg.txq_id = txq_id;
 	iwl_set_swq_id(&trans_pcie->txq[txq_id], get_ac_from_tid(tid), txq_id);
 
-	tid_data = &trans->shrd->tid_data[sta_id][tid];
 	if (tid_data->tfds_in_queue == 0) {
 		IWL_DEBUG_TX_QUEUES(trans, "HW queue is empty\n");
 		tid_data->agg.state = IWL_AGG_ON;