Revert of Copy Widevine files for swarming tests (patchset #5 id:80001 of https:...

Revert of Copy Widevine files for swarming tests (patchset #5 id:80001 of https://codereview.chromium.org/1063453004/)

Reason for revert:
[Sheriff] Breaks chrome mac compilation:
http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Mac/builds/355

Original issue's description:
> Copy Widevine files for swarming tests
>
> BUG=474674
>
> Committed: https://crrev.com/f584802a283f812bdeb9d3704c021a266486ab00
> Cr-Commit-Position: refs/heads/master@{#324170}

TBR=thakis@chromium.org,xhwang@chromium.org,maruel@chromium.org,jrummell@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=474674

Review URL: https://codereview.chromium.org/1069273002

Cr-Commit-Position: refs/heads/master@{#324195}