Revert "add test for tc39/proposal-iterator-sequencing#19 (#4485)"

This reverts commit 60580a0042aad7db962d6bf330ff20316b847d77.

test/built-ins/Iterator/concat/get-value-after-done.js

@@ -1,47 +0,0 @@
-// Copyright (C) 2025 Michael Ficarra. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-iterator.concat
-description: >
-  Iterator.concat accesses the value of a done IteratorResult, matching the behaviour of yield*
-info: |
-  Iterator.concat ( ...items )
-
-  ...
-  3. Let closure be a new Abstract Closure with no parameters that captures iterables and performs the following steps when called:
-    a. For each Record iterable of iterables, do
-      ...
-      v. Repeat, while innerAlive is true,
-        1. Let iteratorResult be ? IteratorNext(iteratorRecord).
-        2. Let done be Completion(IteratorComplete(iteratorResult)).
-        3. If done is a throw completion, then
-          a. Set iteratorRecord.[[Done]] to true.
-          b. Return ? done.
-        4. Set done to ! done.
-        5. If done is true, then
-          a. Set iteratorRecord.[[Done]] to true.
-          b. Perform ? IteratorValue(iteratorResult).
-          ...
-features: [iterator-sequencing]
----*/
-
-let valueAccesses = 0;
-let iter = {
-  [Symbol.iterator]() {
-    return {
-      next() {
-        return {
-          get value() {
-            ++valueAccesses;
-          },
-          done: true,
-        };
-      },
-    };
-  }
-};
-
-Array.from(Iterator.concat(iter, iter, iter));
-
-assert.sameValue(valueAccesses, 3, 'Iterator.concat also accesses value getter after each iterator is done');