[reclient] Remove TSAN Release reclient shadow builders.

A lot of these were various configs that were attempted during the great
performance effort of the spring and summer of 2021.  They are no longer
needed.

Bug: 1260008
Change-Id: I525b2b399622b9681cdc500e0772688788aaee76
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3228938
Commit-Queue: Michael Savigny <msavigny@google.com>
Reviewed-by: Erik Staab <estaab@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/main@{#933037}