net: atheros: atl1c: remove unused atl1c_irq_reset function

clang with W=1 reports
drivers/net/ethernet/atheros/atl1c/atl1c_main.c:214:20: error:
  unused function 'atl1c_irq_reset' [-Werror,-Wunused-function]
static inline void atl1c_irq_reset(struct atl1c_adapter *adapter)
                   ^
This function is not used, so remove it.
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://lore.kernel.org/r/20230320232317.1729464-1-trix@redhat.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/atheros/atl1c/atl1c_main.c

@@ -207,16 +207,6 @@ static inline void atl1c_irq_disable(struct atl1c_adapter *adapter)
 	synchronize_irq(adapter->pdev->irq);
 }
 
-/**
- * atl1c_irq_reset - reset interrupt confiure on the NIC
- * @adapter: board private structure
- */
-static inline void atl1c_irq_reset(struct atl1c_adapter *adapter)
-{
-	atomic_set(&adapter->irq_sem, 1);
-	atl1c_irq_enable(adapter);
-}
-
 /*
  * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads
  * of the idle status register until the device is actually idle