[Password Manager] Remove dead profile migration code for GNOME/KWallet

[Password Manager] Remove dead profile migration code for GNOME/KWallet

This code has been unused for around 2 years.

BUG=355145
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260378

[Mike Mammarella, 2014-03-24 23:56:39]

LGTM
Bonus points if you also write code to delete the old non-profile-specific
password data, which has been unused for >2 years.

[Garrett Casto, 2014-03-28 21:11:33]

The CQ bit was checked by gcasto@chromium.org

[commit-bot: I haz the power, 2014-03-28 21:13:16]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gcasto@chromium.org/196173023/1

[commit-bot: I haz the power, 2014-03-29 00:39:45]

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

[commit-bot: I haz the power, 2014-03-29 00:39:46]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[Garrett Casto, 2014-03-29 05:54:43]

The CQ bit was checked by gcasto@chromium.org

[commit-bot: I haz the power, 2014-03-29 05:55:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gcasto@chromium.org/196173023/1

[commit-bot: I haz the power, 2014-03-29 17:30:06]

Change committed as 260378