Remove all harmony runtime flags which shipped in M51

test/mjsunit/harmony/array-species-delete.js

Index: test/mjsunit/harmony/array-species-delete.js
diff --git a/test/mjsunit/harmony/array-species-delete.js b/test/mjsunit/harmony/array-species-delete.js
deleted file mode 100644
index ba49414069de865c8ff94167138f316f71d83e25..0000000000000000000000000000000000000000
--- a/test/mjsunit/harmony/array-species-delete.js
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-species --allow-natives-syntax
-
-// Overwriting the constructor of an instance updates the protector
-
-let x = [];
-
-assertEquals(Array, x.map(()=>{}).constructor);
-assertEquals(Array, x.filter(()=>{}).constructor);
-assertEquals(Array, x.slice().constructor);
-assertEquals(Array, x.splice().constructor);
-assertEquals(Array, x.concat([1]).constructor);
-assertEquals(1, x.concat([1])[0]);
-
-class MyArray extends Array { }
-
-Object.prototype[Symbol.species] = MyArray;
-delete Array[Symbol.species];
-assertFalse(%SpeciesProtector());
-
-assertEquals(MyArray, x.map(()=>{}).constructor);
-assertEquals(MyArray, x.filter(()=>{}).constructor);
-assertEquals(MyArray, x.slice().constructor);
-assertEquals(MyArray, x.splice().constructor);
-assertEquals(MyArray, x.concat([1]).constructor);
-assertEquals(1, x.concat([1])[0]);