GitLab

This reverts commit c56d4c6c.

Reason for revert: I get the following 13 times per update:

C:/src/trunk/src/build/toolchain/win/setup_toolchain.py:284:
SyntaxWarning: assertion is always true, perhaps remove parentheses?
  assert (vc_lib_atlmfc_path,

Original change's description:
> Added assertion message when ATL is not installed.
> 
> The comment above assert did not match behavior
> of assert. This comment has been fixed and an
> explanatory assertion message was added.
> 
> Bug: None
> Change-Id: If9ac26c578ac45fb9e6dd50b1605ecff13bf1323
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1881161
> Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
> Commit-Queue: Yura Yaroshevich <yura.yaroshevich@gmail.com>
> Cr-Commit-Position: refs/heads/master@{#710425}

TBR=brucedawson@chromium.org,yura.yaroshevich@gmail.com

Change-Id: I18f9431edb7d21435c029a0ce825bfd421f0cc27
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: None
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1888322Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710514}