net: microchip: Remove unused inline function is_bits_set

There's no callers in-tree.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/encx24j600-regmap.c

@@ -17,11 +17,6 @@
 
 #include "encx24j600_hw.h"
 
-static inline bool is_bits_set(int value, int mask)
-{
-	return (value & mask) == mask;
-}
-
 static int encx24j600_switch_bank(struct encx24j600_context *ctx,
 				  int bank)
 {