Editorial: Assert that Evaluation in JSON.parse does not throw (#3394)

spec.html

@@ -45626,9 +45626,8 @@ <h1>JSON.parse ( _text_ [ , _reviver_ ] )</h1>
         1. [id="step-json-parse-parse"] Let _script_ be ParseText(_scriptString_, |Script|).
         1. NOTE: The early error rules defined in <emu-xref href="#sec-object-initializer-static-semantics-early-errors"></emu-xref> have special handling for the above invocation of ParseText.
         1. Assert: _script_ is a Parse Node.
-        1. [id="step-json-parse-eval"] Let _completion_ be Completion(<emu-meta suppress-effects="user-code">Evaluation of _script_</emu-meta>).
+        1. [id="step-json-parse-eval"] Let _unfiltered_ be ! <emu-meta suppress-effects="user-code">Evaluation of _script_</emu-meta>.
         1. NOTE: The PropertyDefinitionEvaluation semantics defined in <emu-xref href="#sec-runtime-semantics-propertydefinitionevaluation"></emu-xref> have special handling for the above evaluation.
-        1. Let _unfiltered_ be _completion_.[[Value]].
         1. [id="step-json-parse-assert-type"] Assert: _unfiltered_ is either a String, a Number, a Boolean, an Object that is defined by either an |ArrayLiteral| or an |ObjectLiteral|, or *null*.
         1. If IsCallable(_reviver_) is *true*, then
           1. Let _root_ be OrdinaryObjectCreate(%Object.prototype%).