Remove check for per-iteration detach check in TypedArray.prototype.set

This updates tests in line with the normative change in
https://github.com/tc39/ecma262/pull/2646

test/built-ins/TypedArray/prototype/set/array-arg-targetbuffer-detached-on-get-src-value-throws.js

@@ -1,45 +0,0 @@
-// Copyright (C) 2016 the V8 project authors. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-/*---
-esid: sec-%typedarray%.prototype.set-array-offset
-description: >
-  Throws an error if buffer is detached before setting a value
-info: |
-  22.2.3.23.1 %TypedArray%.prototype.set (array [ , offset ] )
-
-  1. Assert: array is any ECMAScript language value other than an Object with a
-  [[TypedArrayName]] internal slot. If it is such an Object, the definition in
-  22.2.3.23.2 applies.
-  ...
-  21. Repeat, while targetByteIndex < limit
-    a. Let Pk be ! ToString(k).
-    b. Let kNumber be ? ToNumber(? Get(src, Pk)).
-    c. If IsDetachedBuffer(targetBuffer) is true, throw a TypeError exception.
-    d. Perform SetValueInBuffer(targetBuffer, targetByteIndex, targetType,
-    kNumber).
-  ...
-includes: [testTypedArray.js, detachArrayBuffer.js]
-features: [TypedArray]
----*/
-
-testWithTypedArrayConstructors(function(TA) {
-  var sample = new TA([1, 2, 3]);
-  var obj = {
-    length: 3,
-    "0": 42
-  };
-  Object.defineProperty(obj, 1, {
-    get: function() {
-      $DETACHBUFFER(sample.buffer);
-    }
-  });
-  Object.defineProperty(obj, 2, {
-    get: function() {
-      throw new Test262Error("Should not get other values");
-    }
-  });
-
-  assert.throws(TypeError, function() {
-    sample.set(obj);
-  });
-});