pgsql: plpython: Remove regression test infrastructure for Python 2.

plpython: Remove regression test infrastructure for Python 2.

Since 19252e8ec93 we reject Python 2 during build configuration. Now that the
dust on the buildfarm has settled, remove regression testing infrastructure
dealing with differing output between Python 2 / 3.

Reviewed-By: Peter Eisentraut <peter(at)eisentraut(dot)org>
Reviewed-By: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://postgr.es/m/20211031184548.g4sxfe47n2kyi55r@alap3.anarazel.de

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/db23464715f4792298c639153dda7bfd9ad9d602

Modified Files
--------------
contrib/hstore_plpython/.gitignore | 2 -
contrib/hstore_plpython/Makefile | 6 -
.../hstore_plpython/expected/hstore_plpython.out | 22 +-
contrib/hstore_plpython/sql/hstore_plpython.sql | 18 +-
contrib/jsonb_plpython/.gitignore | 2 -
contrib/jsonb_plpython/Makefile | 7 -
contrib/jsonb_plpython/expected/jsonb_plpython.out | 32 +-
contrib/jsonb_plpython/sql/jsonb_plpython.sql | 30 +-
contrib/ltree_plpython/.gitignore | 2 -
contrib/ltree_plpython/Makefile | 6 -
contrib/ltree_plpython/expected/ltree_plpython.out | 10 +-
contrib/ltree_plpython/sql/ltree_plpython.sql | 8 +-
src/pl/plpython/.gitignore | 2 -
src/pl/plpython/Makefile | 14 -
src/pl/plpython/expected/plpython_call.out | 12 +-
src/pl/plpython/expected/plpython_composite.out | 32 +-
src/pl/plpython/expected/plpython_do.out | 8 +-
src/pl/plpython/expected/plpython_drop.out | 3 +-
src/pl/plpython/expected/plpython_ereport.out | 37 +-
src/pl/plpython/expected/plpython_error.out | 52 +-
src/pl/plpython/expected/plpython_error_5.out | 447 ---------
src/pl/plpython/expected/plpython_global.out | 6 +-
src/pl/plpython/expected/plpython_import.out | 8 +-
src/pl/plpython/expected/plpython_newline.out | 6 +-
src/pl/plpython/expected/plpython_params.out | 8 +-
src/pl/plpython/expected/plpython_quote.out | 2 +-
src/pl/plpython/expected/plpython_record.out | 18 +-
src/pl/plpython/expected/plpython_setof.out | 18 +-
src/pl/plpython/expected/plpython_spi.out | 50 +-
.../plpython/expected/plpython_subtransaction.out | 38 +-
src/pl/plpython/expected/plpython_test.out | 12 +-
src/pl/plpython/expected/plpython_transaction.out | 28 +-
src/pl/plpython/expected/plpython_trigger.out | 46 +-
src/pl/plpython/expected/plpython_types.out | 230 ++---
src/pl/plpython/expected/plpython_types_3.out | 1009 --------------------
src/pl/plpython/expected/plpython_unicode.out | 16 +-
src/pl/plpython/expected/plpython_void.out | 6 +-
src/pl/plpython/regress-python3-mangle.mk | 38 -
src/pl/plpython/sql/plpython_call.sql | 12 +-
src/pl/plpython/sql/plpython_composite.sql | 32 +-
src/pl/plpython/sql/plpython_do.sql | 6 +-
src/pl/plpython/sql/plpython_drop.sql | 4 +-
src/pl/plpython/sql/plpython_ereport.sql | 26 +-
src/pl/plpython/sql/plpython_error.sql | 48 +-
src/pl/plpython/sql/plpython_global.sql | 6 +-
src/pl/plpython/sql/plpython_import.sql | 8 +-
src/pl/plpython/sql/plpython_newline.sql | 6 +-
src/pl/plpython/sql/plpython_params.sql | 8 +-
src/pl/plpython/sql/plpython_quote.sql | 2 +-
src/pl/plpython/sql/plpython_record.sql | 18 +-
src/pl/plpython/sql/plpython_setof.sql | 18 +-
src/pl/plpython/sql/plpython_spi.sql | 50 +-
src/pl/plpython/sql/plpython_subtransaction.sql | 38 +-
src/pl/plpython/sql/plpython_test.sql | 12 +-
src/pl/plpython/sql/plpython_transaction.sql | 26 +-
src/pl/plpython/sql/plpython_trigger.sql | 46 +-
src/pl/plpython/sql/plpython_types.sql | 106 +-
src/pl/plpython/sql/plpython_unicode.sql | 16 +-
src/pl/plpython/sql/plpython_void.sql | 6 +-
src/tools/msvc/vcregress.pl | 76 +-
60 files changed, 625 insertions(+), 2236 deletions(-)