Revert of win 2015: Update the toolchain package to VS2015 RTM. (patchset #2 id:20001 of https://codereview.chromium.org/1265503002/)
Revert of win 2015: Update the toolchain package to VS2015 RTM. (patchset #2 id:20001 of https://codereview.chromium.org/1265503002/)

Reason for revert:
It's breaking the VS2015 builder. I'm looking at it.

Original issue's description:
> win 2015: Update the toolchain package to VS2015 RTM.
>
> I've tried it locally (build Chrome with this archive on a fresh VM) and it worked well, the archive has been generated with package_from_installed.py (from depot_tools/win_toolchain)
>
> BUG=
>
> Committed: https://crrev.com/f04ff85d2b85833971ef7ca7f31f4fd5a1b1f3aa
> Cr-Commit-Position: refs/heads/master@{#340898}

TBR=brucedawson@chromium.org,thakis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1254023004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#340906}

Just-D/chromium-1,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,Just-D/chromium-1,Just-D/chromium-1,axinging/chromium-crosswalk,Just-D/chromium-1,Chilledheart/chromium,Pluto-tv/chromium-crosswalk,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,axinging/chromium-crosswalk,Just-D/chromium-1,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,Pluto-tv/chromium-crosswalk,Just-D/chromium-1,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,Chilledheart/chromium,Pluto-tv/chromium-crosswalk,Just-D/chromium-1,Chilledheart/chromium,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,Just-D/chromium-1,Just-D/chromium-1,Chilledheart/chromium,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk