Removed obsolete nll feature-gate as it is now the default

Author: Dessix

snocat-cli/src/main.rs

@@ -1,6 +1,5 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license OR Apache 2.0
-#![feature(nll)]
 #![feature(async_closure)]
 #![feature(backtrace)]
 #![warn(unused_imports)]