remove no longer necessary .indexed() methods

spec.html

@@ -523,24 +523,6 @@ <h1>Iterator.prototype.drop ( _limit_ )</h1>
         </emu-alg>
       </emu-clause>
 
-      <emu-clause id="sec-iteratorprototype.indexed">
-        <h1>Iterator.prototype.indexed ( )</h1>
-        <emu-alg>
-          1. Let _iterated_ be ? GetIteratorDirect(*this* value).
-          1. Let _closure_ be a new Abstract Closure with no parameters that captures _iterated_ and performs the following steps when called:
-            1. Let _index_ be 0.
-            1. Repeat,
-              1. Let _next_ be ? IteratorStep(_iterated_).
-              1. If _next_ is *false*, return *undefined*.
-              1. Let _value_ be ? IteratorValue(_next_).
-              1. Let _pair_ be CreateArrayFromList(&laquo; 𝔽(_index_), _value_ &raquo;).
-              1. Let _completion_ be Completion(Yield(_pair_)).
-              1. IfAbruptCloseIterator(_completion_, _iterated_).
-              1. Set _index_ to _index_ + 1.
-          1. Return CreateIteratorFromClosure(_closure_, ~Iterator Helper~, %IteratorHelperPrototype%).
-        </emu-alg>
-      </emu-clause>
-
       <emu-clause id="sec-iteratorprototype.flatmap">
         <h1>Iterator.prototype.flatMap ( _mapper_ )</h1>
         <emu-alg>
@@ -802,24 +784,6 @@ <h1>AsyncIterator.prototype.drop ( _limit_ )</h1>
         </emu-alg>
       </emu-clause>
 
-      <emu-clause id="sec-asynciteratorprototype.indexed">
-        <h1>AsyncIterator.prototype.indexed ( )</h1>
-        <emu-alg>
-          1. Let _iterated_ be ? GetIteratorDirect(*this* value).
-          1. Let _closure_ be a new Abstract Closure with no parameters that captures _iterated_ and performs the following steps when called:
-            1. Let _index_ be 0.
-            1. Repeat,
-              1. Let _next_ be ? Await(? IteratorNext(_iterated_)).
-              1. If ? IteratorComplete(_next_) is *true*, return *undefined*.
-              1. Let _value_ be ? IteratorValue(_next_).
-              1. Let _pair_ be CreateArrayFromList(&laquo; _index_, _value_ &raquo;).
-              1. Let _completion_ be Completion(Yield(_pair_)).
-              1. IfAbruptCloseAsyncIterator(_completion_, _iterated_).
-              1. Set _index_ to _index_ + 1.
-          1. Return CreateAsyncIteratorFromClosure(_closure_, ~Async Iterator Helper~, %AsyncIteratorHelperPrototype%).
-        </emu-alg>
-      </emu-clause>
-
       <emu-clause id="sec-asynciteratorprototype.flatmap">
         <h1>AsyncIterator.prototype.flatMap ( _mapper_ )</h1>
         <p>AsyncIterator.prototype.flatMap is a built-in async generator function which, when called, performs the following steps:</p>