Remove unnecessary send codec initialization from voe::Channel.

Remove unnecessary send codec initialization from voe::Channel.

BUG=webrtc:4690
Review-Url: https://codereview.webrtc.org/3012403002
Cr-Commit-Position: refs/heads/master@{#19981}
Committed: https://webrtc.googlesource.com/src/+/6df16bf46d7d1983e9c7cca53b326ecf76454290

[the sun, 2017-09-18 14:33:21]

solenberg@webrtc.org changed reviewers:
+ ossu@webrtc.org

[ossu, 2017-09-25 16:54:00]

This looks fine by me, provided nothing still relies on these being defaults. I
_think_ we should be alright, but I'd be a lot more relaxed if all the bots were
green.

I'll try to do some spelunking to assure myself that this won't blow up somehow.

[the sun, 2017-09-25 19:51:02]

The CQ bit was checked by solenberg@webrtc.org to run a CQ dry run

[commit-bot: I haz the power, 2017-09-25 19:51:07]

Dry run: CQ is trying da patch.

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

[commit-bot: I haz the power, 2017-09-25 20:23:55]

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

[commit-bot: I haz the power, 2017-09-25 20:23:56]

Dry run: This issue passed the CQ dry run.

[ossu, 2017-09-26 15:13:33]

I've now completed the aforementioned spelunking and I can't find anywhere where
this would cause an issue.

I'll give you an lgtm to use once all the bots turn green. :)

[the sun, 2017-09-26 23:43:15]

The CQ bit was checked by solenberg@webrtc.org

[the sun, 2017-09-26 23:43:15]

The patchset sent to the CQ was uploaded after l-g-t-m from ossu@webrtc.org
Link to the patchset: https://codereview.webrtc.org/3012403002/#ps40001 (title:
"rebase")

[commit-bot: I haz the power, 2017-09-26 23:43:27]

CQ is trying da patch.

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

[commit-bot: I haz the power, 2017-09-27 00:13:19]

CQ is committing da patch.

Bot data: {"patchset_id": 40001, "attempt_start_ts": 1506469395209160,
"parent_rev": "95214918f51872cfecd5e65dbd8df9be3aa10243", "commit_rev":
"6df16bf46d7d1983e9c7cca53b326ecf76454290"}

[commit-bot: I haz the power, 2017-09-27 00:13:23]

Description was changed from

==========
Remove unnecessary send codec initialization from voe::Channel.

BUG=webrtc:4690
==========

to

==========
Remove unnecessary send codec initialization from voe::Channel.

BUG=webrtc:4690

Review-Url: https://codereview.webrtc.org/3012403002
Cr-Commit-Position: refs/heads/master@{#19981}
Committed:
https://webrtc.googlesource.com/src/+/6df16bf46d7d1983e9c7cca53b326ecf76454290
==========

[commit-bot: I haz the power, 2017-09-27 00:13:24]

Committed patchset #3 (id:40001) as
https://webrtc.googlesource.com/src/+/6df16bf46d7d1983e9c7cca53b326ecf76454290