Changed return value to Option<T>

changed from Option<(usize, T)> to Option<T> as the index to the item removed is really unnecessary.

Author: madseagames

src/libcollections/vec.rs

@@ -1298,13 +1298,13 @@ impl<T: PartialEq> Vec<T> {
     }
 
     #[unstable(feature = "vec_remove_item", reason = "recently added", issue = "38143")]
-    pub fn remove_item(&mut self, item: &T) -> Option<(usize, T)> {
+    pub fn remove_item(&mut self, item: &T) -> Option<T> {
         let pos = match self.iter().position(|x| *x == *item) {
             Some(x) => x,
             None => return None,
         };
 
-        Some((pos, self.remove(pos)))
+        Some(self.remove(pos))
     }
 }