pgsql: Remove obsolete ifdefs

Remove obsolete ifdefs

Commit 8dace66e0735ca39b779922d02c24ea2686e6521 added #ifdefs for a
number of errno symbols because they were not present on Windows.
Later, commit 125ad539a275db5ab8f4647828b80a16d02eabd2 added
replacement #defines for some of those symbols.  So some of the
changes from the first commit are made dead code by the second commit
and can now be removed.

Discussion: https://www.postgresql.org/message-id/flat/6dee8574-b0ad-fc49-9c8c-2edc796f0033@2ndquadrant.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/555eb1a4f0114e1c4017093fe840045dde1ed9ea

Modified Files
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src/port/strerror.c | 10 ----------
1 file changed, 10 deletions(-)