remove dead code.
remove dead code.

R=smut

Change-Id: Ie919e4f90378ecdeb6a2e015cb313f044aa2d214
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2080206
Auto-Submit: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>
Reviewed-by: smut <95deb7aa15d4c615299e47e7688551456568b1fb@google.com>
Reviewed-by: Edward Lesmes <d05609f027dc667cc37492b1dc1bdea5d60fa82a@chromium.org>
Commit-Queue: Edward Lesmes <d05609f027dc667cc37492b1dc1bdea5d60fa82a@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools