Editorial: eliminate accidental ambiguity in Punctuator

PR tc39#1646 introduced an ambiguity to the lexical grammar: Punctuator derives OtherPunctuator in two different ways -- directly, and indirectly via OptionalChainingPunctuator. It doesn't make sense for OptionalChainingPunctuator to derive OtherPunctuator, so I've eliminated that alternative.
jmdyck · Feb 5, 2020 · f5e7449 · f5e7449
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commit f5e7449
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diff --git a/spec.html b/spec.html
@@ -11100,7 +11100,6 @@ <h2>Syntax</h2>
     <emu-grammar type="definition">
       OptionalChainingPunctuator ::
         `?.` [lookahead &lt;! DecimalDigit]
-        OtherPunctuator
 
       OtherPunctuator :: one of
         `{` `(` `)` `[` `]`