Delete redundant call to ServiceProcess::Teardown.

Delete redundant call to ServiceProcess::Teardown.

Currently Teardown is called twice on shutdown.

The ServiceProcess is on the stack. It will call Teardown from its
destructor when ServiceProcessMain returns.

It looks like this redundancy has been there since the service process was first introduced in:
https://codereview.chromium.org/2001009/

Committed: https://crrev.com/98e52c65f19c80867ba2b15b12c80e4ded8d950c
Cr-Commit-Position: refs/heads/master@{#339707}

[Michael van Ouwerkerk, 2015-07-21 09:45:23]

mvanouwerkerk@chromium.org changed reviewers:
+ vitalybuka@chromium.org

[Michael van Ouwerkerk, 2015-07-21 09:45:23]

Vitaly, could you take a look please?

[Vitaly Buka (NO REVIEWS), 2015-07-21 16:54:13]

lgtm

[Michael van Ouwerkerk, 2015-07-21 17:22:56]

The CQ bit was checked by mvanouwerkerk@chromium.org

[commit-bot: I haz the power, 2015-07-21 17:23:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1242873004/1

[commit-bot: I haz the power, 2015-07-21 18:43:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-21 18:44:18]

Patchset 1 (id:??) landed as
https://crrev.com/98e52c65f19c80867ba2b15b12c80e4ded8d950c
Cr-Commit-Position: refs/heads/master@{#339707}