pgsql: Doc: remove src/backend/regex/re_syntax.n.

Doc: remove src/backend/regex/re_syntax.n.

We aren't publishing this file as documentation, and it's been
much more haphazardly maintained than the real docs in func.sgml,
so let's just drop it. I think the only reason I included it in
commit 7bcc6d98f was that the Berkeley-era sources had had a man
page in this directory.

Discussion: /messages/by-id/4099447.1614186542@sss.pgh.pa.us

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/301ed8812e3f8b102b85e1f5a59e95990ed9a868

Modified Files
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src/backend/regex/re_syntax.n | 979 ------------------------------------------
1 file changed, 979 deletions(-)