firmware: remove unused __fw_state_is_done()

After commit e44565f6 ("firmware: fix batched requests - wake all waiters")
where we moved away from swait to old wait with a completion we also
stopped using __fw_state_is_done(). Since this is longer used kill it.
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/firmware_class.c

@@ -201,11 +201,6 @@ static void fw_state_init(struct fw_state *fw_st)
 	fw_st->status = FW_STATUS_UNKNOWN;
 }
 
-static inline bool __fw_state_is_done(enum fw_status status)
-{
-	return status == FW_STATUS_DONE || status == FW_STATUS_ABORTED;
-}
-
 static int __fw_state_wait_common(struct fw_state *fw_st, long timeout)
 {
 	long ret;