Please review JDK-8193295 "Remove no longer used COMMALEFT" at 
<http://cr.openjdk.java.net/~attila/8193295/webrev.jdk> for 
<https://bugs.openjdk.java.net/browse/JDK-8193295>

I love deleting code :-)

COMMALEFT was an odd duck, as there’s not really anything in the ES 
specification that’d require it, and we really don’t even use it for anything. 
I had a memory that we used to use it for some behavior around object literals, 
but I can’t find any traces of that… I run:

        hg log --template "{ifcontains('COMMALEFT', diff(), '{node} {desc}\n', 
'')}”

and trawled through the diffs for all changesets it brought up, but I haven’t 
found a single use of COMMALEFT ever.

Thanks,
  Attila.

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