Revert of Add the ability to build Chrome tools to the Win Clang build script. (patchset #2 id:20001 of https://codereview.chromium.org/1068603002/)

Reason for revert:
Broke all bots on http://build.chromium.org/p/chromium.fyi/console?category=win%20clang , they fail with:

________ running 'C:\b\depot_tools\python276_bin\python.exe src/tools/clang/scripts/update.py --if-needed' in 'C:\b\build\slave\CrWinClang\build'
usage: update.py [-h] [--no-clobber] [--tools [TOOLS [TOOLS ...]]]
update.py: error: unrecognized arguments: --if-needed

Probably easy to fix (just add a dummy --if-needed parameter to argparse), but reverting to get that waterfall back to green.

Original issue's description:
> Add the ability to build Chrome tools to the Win Clang build script.
>
> BUG=424436,467287
>
> Committed: https://crrev.com/475949d9430b6a759ce759f2133dd3a1577d0d0b
> Cr-Commit-Position: refs/heads/master@{#324089}

TBR=hans@chromium.org,dcheng@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=424436,467287

Review URL: https://codereview.chromium.org/1063273002

Cr-Commit-Position: refs/heads/master@{#324138}

0 files changed, 0 insertions, 0 deletions