Remove unused file from webkitpy

Remove unused file from webkitpy

The FileSetFileHandle was only used by the ZipFileSet
which have already been removed from the webkitpy.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=184159

[kkristof, 2014-10-21 13:10:13]

kkosztyo.u-szeged@partner.samsung.com changed reviewers:
+ abarth@chromium.org, dpranke@google.com, thakis@chromium.org

[Peter Beverloo, 2014-10-21 13:15:15]

On 2014/10/21 13:10:14, kkristof wrote:

lgtm

[Dirk Pranke, 2014-10-21 19:13:19]

dpranke@chromium.org changed reviewers:
+ dpranke@chromium.org

[Dirk Pranke, 2014-10-21 19:13:20]

lgtm

[kkristof, 2014-10-22 07:02:46]

The CQ bit was checked by kkosztyo.u-szeged@partner.samsung.com

[kkristof, 2014-10-22 07:02:50]

The CQ bit was unchecked by kkosztyo.u-szeged@partner.samsung.com

[kkristof, 2014-10-22 08:19:42]

The CQ bit was checked by kkosztyo.u-szeged@partner.samsung.com

[commit-bot: I haz the power, 2014-10-22 08:20:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/641813008/1

[kkristof, 2014-10-22 09:15:16]

The CQ bit was unchecked by kkosztyo.u-szeged@partner.samsung.com

[kkristof, 2014-10-22 09:15:18]

The CQ bit was checked by kkosztyo.u-szeged@partner.samsung.com

[commit-bot: I haz the power, 2014-10-22 09:16:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/641813008/1

[commit-bot: I haz the power, 2014-10-22 10:03:02]

Committed patchset #1 (id:1) as 184159