Comment (by Roland Haas):

There seem to be more opportunities to remove now dead code:

• some of the parsers called subroutines that are no longer needed
• the parser comparison routine can be removed

With there being only a single data structure it should no longer be called $foo1 but just $foo.

Comments in the pull request show individual instances of these, though there may be some that I missed.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2452/remove-non-piraha-parser-from-cst