This reverts commit 2b8a99b1.

Reason for revert: `git cl format` returning KeyError: 'chromium' in some chromium py repos

See https://crbug.com/1264076

Original change's description:
> Update vpython spec for yapf
>
> Update yapf to latest version.
>
> Bug: None
> Change-Id: I77a994105e8ef16dcaf61402523d4cf9a1e39722
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3237590
> Commit-Queue: Chris McDonald <cjmcdonald@chromium.org>
> Auto-Submit: Chris McDonald <cjmcdonald@chromium.org>
> Reviewed-by: Josip Sokcevic <sokcevic@google.com>

Bug: 1264076
Change-Id: Ic94b6314f2c5183353d38f62d379304d7a830969
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3248264
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Stephanie Kim <kimstephanie@google.com>
Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>

Update yapf to latest version.

Bug: None
Change-Id: I77a994105e8ef16dcaf61402523d4cf9a1e39722
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3237590
Commit-Queue: Chris McDonald <cjmcdonald@chromium.org>
Auto-Submit: Chris McDonald <cjmcdonald@chromium.org>
Reviewed-by: Josip Sokcevic <sokcevic@google.com>

R=ehmaldonado@chromium.org

Bug: 1197346
Change-Id: Ifc56ff316954eaa3c532b212371de57f8884ff97
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2822446Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Josip Sokcevic <sokcevic@google.com>

Bug: 1074167
Change-Id: I9f0c1c8a1fa76d6bf2899000fd0b3665f7bf0994
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2174818Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Anthony Polito <apolito@google.com>

see
https://github.com/google/yapf#usage

Bug: 1073708
Change-Id: I3824bbecc6c52d6b7f82aaa05e5108a8619124d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2162227Reviewed-by: Aaron Gable <agable@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Auto-Submit: Takuto Ikuta <tikuta@chromium.org>

0.24 has just been uploaded see bug.

Bug: 890349
Change-Id: Ice1e0c54d3fb60c0da5fde14aafae20c3ac449ce
Reviewed-on: https://chromium-review.googlesource.com/c/1261756Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Aiden Benner <abenner@google.com>

Add yapf and yapf.bat with a vpython spec, so it can be used anywhere, e.g.
bots.

Change-Id: I363c0251ed766b2bb15a8c0f03615bc9a3ecb37a
Reviewed-on: https://chromium-review.googlesource.com/1107170
Commit-Queue: Nodir Turakulov <nodir@chromium.org>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>