No longer need slice_rotate feature gate

dtolnay · Thomas Jespersen · commit b9bf18d94eb8 · 2018-10-29T07:03:58.000+01:00
diff --git a/src/lib.rs b/src/lib.rs
@@ -12,7 +12,6 @@
 
 #![cfg_attr(not(feature = "norustc"), feature(rustc_private))]
 #![cfg_attr(not(feature = "stable"), feature(test))]
-#![cfg_attr(not(feature = "stable"), feature(slice_rotate))]
 
 #![deny(unused_imports)]
 
