This reverts commit 9c02a833.

Reason for revert: the referenced hash doesn't have a cipd package.
It breaks gclient sync for src.git.

Original change's description:
> [led] Update led to the latest version
> 
> infra.git relevant Changelog:
> 8bc0df738 [kitchen] Remove some unnecessary flags.
> 54472fa9f led: improvements in led get-build subcommand.
> 6707984c0 [led] Add ability to set buildbucket tags on get-builder command.
> 
> R=​nodir@chromium.org
> 
> Bug:
> Change-Id: If1e664f402fdac73fe16ae351d9a5d819f426909
> Reviewed-on: https://chromium-review.googlesource.com/809947
> Reviewed-by: Nodir Turakulov <nodir@chromium.org>
> Commit-Queue: Robbie Iannucci <iannucci@chromium.org>

TBR=iannucci@chromium.org,nodir@chromium.org

Change-Id: Idbed632448a986f714579c63c4da8b49068757ce
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/810164Reviewed-by: Marc-Antoine Ruel <maruel@chromium.org>
Commit-Queue: Marc-Antoine Ruel <maruel@chromium.org>