Remove unused rev8 function from avalon driver.

driver-avalon.c

@@ -40,19 +40,6 @@ static int option_offset = -1;
 struct avalon_info **avalon_info;
 struct device_api avalon_api;
 
-static inline uint8_t rev8(uint8_t d)
-{
-	int i;
-	uint8_t out = 0;
-
-	/* from left to right */
-	for (i = 0; i < 8; i++)
-		if (d & (1 << i))
-			out |= (1 << (7 - i));
-
-	return out;
-}
-
 static int avalon_init_task(struct avalon_task *at,
 			    uint8_t reset, uint8_t ff, uint8_t fan,
 			    uint8_t timeout, uint8_t asic_num,