repeat_str feature has been stablilized

Mrmaxmeier · Mrmaxmeier · commit 2be75ef97383 · 2017-02-03T14:16:14.000+01:00
diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs
@@ -8,7 +8,6 @@
 #![feature(rustc_private)]
 #![feature(slice_patterns)]
 #![feature(stmt_expr_attributes)]
-#![feature(repeat_str)]
 #![feature(conservative_impl_trait)]
 #![feature(collections_bound)]
 
