Remove redundant tests

Author: usbalbin

library/core/tests/array.rs

@@ -317,14 +317,6 @@ fn array_map() {
     assert_eq!(b, [1, 2, 3]);
 }
 
-#[test]
-fn array_zip() {
-    let a = [1, 2, 3];
-    let b = [4, 5, 6];
-    let c = a.zip(b);
-    assert_eq!(c, [(1, 4), (2, 5), (3, 6)]);
-}
-
 // See note on above test for why `should_panic` is used.
 #[test]
 #[should_panic(expected = "test succeeded")]

library/core/tests/lib.rs

@@ -3,7 +3,6 @@
 #![feature(array_from_ref)]
 #![feature(array_methods)]
 #![feature(array_map)]
-#![feature(array_zip)]
 #![feature(array_windows)]
 #![feature(bool_to_option)]
 #![feature(bound_cloned)]