wifi: mt76: Remove an unneeded local variable in mt76x02_dma_init()

Remove 't' which is unneeded since commit f3950a414143 ("mt76: set
txwi_size according to the driver value")

This slightly simplifies the code.

Signed-off-by: Christophe JAILLET <[e-mail]>
Link: https://patch.msgid.link/e86d5602bd[e-mail]
Signed-off-by: Felix Fietkau <[e-mail]>

drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c

···
 
 int mt76x02_dma_init(struct mt76x02_dev *dev)
 {
-	struct mt76_txwi_cache __maybe_unused *t;
 	int i, ret, fifo_size;
 	struct mt76_queue *q;
 	void *status_fifo;