Rollup merge of #108660 - xfix:remove-ne-method-from-str, r=thomcc

Remove ne implementations from strings

As far as I can tell, there isn't really a reason for those.

Author: Dylan-DPC

library/alloc/src/string.rs

@@ -2213,10 +2213,6 @@ impl PartialEq for String {
     fn eq(&self, other: &String) -> bool {
         PartialEq::eq(&self[..], &other[..])
     }
-    #[inline]
-    fn ne(&self, other: &String) -> bool {
-        PartialEq::ne(&self[..], &other[..])
-    }
 }
 
 macro_rules! impl_eq {

library/core/src/str/traits.rs

@@ -28,10 +28,6 @@ impl PartialEq for str {
     fn eq(&self, other: &str) -> bool {
         self.as_bytes() == other.as_bytes()
     }
-    #[inline]
-    fn ne(&self, other: &str) -> bool {
-        !(*self).eq(other)
-    }
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]