This changes all references to the LUCI_OMIT_PYTHON2 environment
variable to instead assume that it is `'true'`.
R=sokcevic, tikuta
Bug: 1441784
Recipe-Nontrivial-Roll: build
Change-Id: Iea161a372adb68cdcb330d131df2c19ca2fe7b37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4522480
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>
Reviewed-by: Josip Sokcevic <sokcevic@chromium.org>