pgsql: Disable TAP tests of pg_receivewal for ZLIB on Windows

Disable TAP tests of pg_receivewal for ZLIB on Windows

This reverts commit 91d395f, to avoid running those tests on Windows.
The tests are globally stable across all buildfarm members, except
fairywren (crash of pg_receivewal) and bowerdird (SIGBREAK preventing
the buildfarm run to complete). Those errors are rather strange, as
other hosts with very similar characteristics are able to run those
tests without breaking a sweat.

For now, disable those tests on Windows to turn back the buildfarm to
green.

Per discussion with Andrew Dunstan.

Discussion: https://postgr.es/m/[email protected]

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6a2c532c2230159b909382cfa58494ef9d6df703

Modified Files
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src/bin/pg_basebackup/t/020_pg_receivewal.pl | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)