f rm redundant feature gate

Author: TheBlueMatt

lightning/src/util/wakers.rs

@@ -579,7 +579,6 @@ mod tests {
 		Sleeper::from_two_futures(notifier_a.get_future(), notifier_b.get_future()).wait();
 
 		// However once we've slept twice, we should no longer have any pending notifications
-		#[cfg(feature = "std")]
 		assert!(!Sleeper::from_two_futures(notifier_a.get_future(), notifier_b.get_future())
 			.wait_timeout(Duration::from_millis(10)));