wlcore: Remove pointless spinlock

No need to take a spinlock here for bitops.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200702162951.45392-5-tony@atomide.com

drivers/net/wireless/ti/wlcore/main.c

@@ -700,9 +700,7 @@ static irqreturn_t wlcore_irq(int irq, void *cookie)
 	mutex_unlock(&wl->mutex);
 
 out_handled:
-	spin_lock_irqsave(&wl->wl_lock, flags);
 	clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
-	spin_unlock_irqrestore(&wl->wl_lock, flags);
 
 	return IRQ_HANDLED;
 }