Remove deprecated constructors from enhanced bookmark model

Remove deprecated constructors from enhanced bookmark model

EnhancedBookmarksModel(int) is never used and should be removed.

BUG=458632
Committed: https://crrev.com/a58d0f0c1b3002335aa5852c4656cff05dfc9b01
Cr-Commit-Position: refs/heads/master@{#318907}

[Ian Wen, 2015-03-02 23:07:17]

ianwen@chromium.org changed reviewers:
+ kkimlabs@chromium.org

[Kibeom Kim (inactive), 2015-03-02 23:53:51]

lgtm

[Ian Wen, 2015-03-03 00:00:00]

The CQ bit was checked by ianwen@chromium.org

[commit-bot: I haz the power, 2015-03-03 00:00:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/968383002/1

[commit-bot: I haz the power, 2015-03-03 02:11:54]

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

[commit-bot: I haz the power, 2015-03-03 02:11:55]

Try jobs failed on following builders:
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)

[Ian Wen, 2015-03-03 17:45:32]

The CQ bit was checked by ianwen@chromium.org

[commit-bot: I haz the power, 2015-03-03 17:46:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/968383002/1

[commit-bot: I haz the power, 2015-03-03 18:08:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-03 18:08:50]

Patchset 1 (id:??) landed as
https://crrev.com/a58d0f0c1b3002335aa5852c4656cff05dfc9b01
Cr-Commit-Position: refs/heads/master@{#318907}