Remove d8's interactive Javascript debugger.

Remove d8's interactive Javascript debugger.

The code is unmaintained and full of errors...
but this CL wipes them all away.

Nobody seems to use it anyways.

R=mvstanton@chromium.org

Committed: https://crrev.com/cd0015aad0d4d5d3ecc4d3dae281a3f941111d85
Cr-Commit-Position: refs/heads/master@{#29801}

[mvstanton, 2015-07-23 08:27:17]

lgtm

[Yang, 2015-07-23 08:27:34]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-07-23 08:27:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1243213004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1243213004/1

[commit-bot: I haz the power, 2015-07-23 08:37:10]

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

[commit-bot: I haz the power, 2015-07-23 08:37:10]

Try jobs failed on following builders:
  v8_win_nosnap_shared_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_nosnap_shared_compil...)

[Yang, 2015-07-23 08:58:15]

The CQ bit was checked by yangguo@chromium.org

[Yang, 2015-07-23 08:58:15]

The patchset sent to the CQ was uploaded after l-g-t-m from
mvstanton@chromium.org
Link to the patchset: https://codereview.chromium.org/1243213004/#ps20001
(title: "fix shared library build.")

[commit-bot: I haz the power, 2015-07-23 08:58:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1243213004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1243213004/20001

[commit-bot: I haz the power, 2015-07-23 09:49:25]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-23 09:49:44]

Patchset 2 (id:??) landed as
https://crrev.com/cd0015aad0d4d5d3ecc4d3dae281a3f941111d85
Cr-Commit-Position: refs/heads/master@{#29801}