Thread: pgsql: Revert "Handle better implicit transaction state of pipeline mod

Revert "Handle better implicit transaction state of pipeline mode"

This reverts commit d77f91214fb7 on all stable branches, due to concerns
regarding the compatility side effects this could create in a minor
release.  The change still exists on HEAD.

Discussion: https://postgr.es/m/CA+TgmoZqRgeFTg4+Yf_CMRRXiHuNz1u6ZC4FvVk+rxw0RmOPnw@mail.gmail.com
Backpatch-through: 13

Branch
------
REL_14_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/3aae60c851badb601df47f46ee459f047c998f59

Modified Files
--------------
doc/src/sgml/protocol.sgml                   |  21 ++--
src/backend/access/transam/xact.c            |  13 +++
src/backend/tcop/postgres.c                  |  18 ----
src/bin/pgbench/t/001_pgbench_with_server.pl | 155 ---------------------------
4 files changed, 23 insertions(+), 184 deletions(-)