Merge pull request #671 from ethcore/clippy_hook

Removing running clippy by default on nightly.

ethcore/src/block_queue.rs

@@ -121,7 +121,7 @@ struct QueueSignal {
 }
 
 impl QueueSignal {
-	#[cfg_attr(all(nightly, feature="dev"), allow(bool_comparison))]
+	#[cfg_attr(feature="dev", allow(bool_comparison))]
 	fn set(&self) {
 		if self.signalled.compare_and_swap(false, true, AtomicOrdering::Relaxed) == false {
 			self.message_channel.send(UserMessage(SyncMessage::BlockVerified)).expect("Error sending BlockVerified message");