Remove crc_folding.c from google.patch

Remove crc_folding.c from google.patch

The recent change to crc_folding.c was added to google.patch but this
was inappropriate because crc_folding.c is not part of the original zlib
distribution. This was noticed by scottmg@

R=gavinp@chromium.org
BUG=440500
Committed: https://crrev.com/93a8d6c6a00e690fc4fcdc55d016d0ac8c6fab7c
Cr-Commit-Position: refs/heads/master@{#353760}

[gavinp, 2015-10-13 15:23:42]

lgtm

[gavinp, 2015-10-13 15:23:47]

The CQ bit was checked by gavinp@chromium.org

[commit-bot: I haz the power, 2015-10-13 15:28:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1397813003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1397813003/1

[commit-bot: I haz the power, 2015-10-13 15:51:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-13 15:52:28]

Patchset 1 (id:??) landed as
https://crrev.com/93a8d6c6a00e690fc4fcdc55d016d0ac8c6fab7c
Cr-Commit-Position: refs/heads/master@{#353760}