Rollup merge of rust-lang#45005 - leodasvacas:inline-eq-slice-into-eq, r=jseyfried

Inline eq_slice into str::eq

It's the only use of the function.

Author: kennytm

src/libcore/str/mod.rs

@@ -1405,16 +1405,6 @@ impl<'a> DoubleEndedIterator for LinesAny<'a> {
 #[allow(deprecated)]
 impl<'a> FusedIterator for LinesAny<'a> {}
 
-/*
-Section: Comparing strings
-*/
-
-/// Bytewise slice equality
-#[inline]
-fn eq_slice(a: &str, b: &str) -> bool {
-    a.as_bytes() == b.as_bytes()
-}
-
 /*
 Section: UTF-8 validation
 */
@@ -1590,7 +1580,6 @@ mod traits {
     use cmp::Ordering;
     use ops;
     use slice::{self, SliceIndex};
-    use str::eq_slice;
 
     /// Implements ordering of strings.
     ///
@@ -1611,7 +1600,7 @@ mod traits {
     impl PartialEq for str {
         #[inline]
         fn eq(&self, other: &str) -> bool {
-            eq_slice(self, other)
+            self.as_bytes() == other.as_bytes()
         }
         #[inline]
         fn ne(&self, other: &str) -> bool { !(*self).eq(other) }