Archive svndiff script.

Archive svndiff script.

Nobody is using this script anymore, so to prevent more changes to it,
let's remove it now.

BUG=None
TEST=None
R=borenet@google.com

Committed: https://skia.googlesource.com/skia/+/70242ace3b2ed06b33ee5ea5c9ac3aedea89b194

[borenet, 2014-10-10 21:12:55]

LGTM

[tfarina, 2014-10-13 13:51:27]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2014-10-13 13:52:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/646043002/1

[commit-bot: I haz the power, 2014-10-13 14:53:07]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-13 14:53:08]

Try jobs failed on following builders:
  Build-Mac10.8-Clang-x86_64-Release-Trybot on client.skia.compile
(http://build.chromium.org/p/client.skia.compile/builders/Build-Mac10.8-Clang-...)

[tfarina, 2014-10-13 14:59:57]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2014-10-13 15:01:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/646043002/1

[commit-bot: I haz the power, 2014-10-13 19:58:37]

Committed patchset #1 (id:1) as 70242ace3b2ed06b33ee5ea5c9ac3aedea89b194