webkitpy: Remove unnecessary code in test_copier.py

webkitpy: Remove unnecessary code in test_copier.py

1. A local variable |copied_files| is never read. Remove it.
2. So, copy_file() needs to return nothing.
3. Then, _webkit_root is removable.

Review-Url: https://codereview.chromium.org/2852673003
Cr-Commit-Position: refs/heads/master@{#468262}
Committed: https://chromium.googlesource.com/chromium/src/+/1d2108cce478cac9751c40efc18e06d12a7a1f2b

[tkent, 2017-04-28 08:44:39]

The CQ bit was checked by tkent@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-04-28 08:44:57]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[tkent, 2017-04-28 09:35:27]

tkent@chromium.org changed reviewers:
+ jeffcarp@chromium.org

[tkent, 2017-04-28 09:35:28]

jeffcarp@, would you review this please?

[commit-bot: I haz the power, 2017-04-28 10:03:14]

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

[commit-bot: I haz the power, 2017-04-28 10:03:15]

Dry run: This issue passed the CQ dry run.

[jeffcarp, 2017-04-28 22:20:19]

lgtm

[tkent, 2017-04-30 22:23:51]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2017-04-30 22:24:08]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-30 23:56:07]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493591031791120, "parent_rev":
"dbb0926440285d10f36d74a40065cbf1253ad77e", "commit_rev":
"1d2108cce478cac9751c40efc18e06d12a7a1f2b"}

[commit-bot: I haz the power, 2017-04-30 23:56:14]

Description was changed from

==========
webkitpy: Remove unnecessary code in test_copier.py

1. A local variable |copied_files| is never read. Remove it.
2. So, copy_file() needs to return nothing.
3. Then, _webkit_root is removable.
==========

to

==========
webkitpy: Remove unnecessary code in test_copier.py

1. A local variable |copied_files| is never read. Remove it.
2. So, copy_file() needs to return nothing.
3. Then, _webkit_root is removable.

Review-Url: https://codereview.chromium.org/2852673003
Cr-Commit-Position: refs/heads/master@{#468262}
Committed:
https://chromium.googlesource.com/chromium/src/+/1d2108cce478cac9751c40efc18e...
==========

[commit-bot: I haz the power, 2017-04-30 23:56:15]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/1d2108cce478cac9751c40efc18e...