Revert of Add ubsan_no_recover_hack to missing ubsan builders. (patchset #1...

Revert of Add ubsan_no_recover_hack to missing ubsan builders. (patchset #1 id:1 of https://codereview.chromium.org/2538103002/ )

Reason for revert:
UBSan is noisy and can't be enabled for explicit crash behavior on builders. On ClusterFuzz, it will be still enabled to create testcases.

BUG=673488

Original issue's description:
> Add ubsan_no_recover_hack to missing ubsan builders.
>
> R=inferno@chromium.org, ochang@chromium.org, phajdan.jr@chromium.org
> BUG=669566
>
> Committed: https://crrev.com/a50c295543d07efaedd8534d117f3860a3df52e8
> Cr-Commit-Position: refs/heads/master@{#435317}

TBR=ochang@chromium.org,phajdan.jr@chromium.org,mmoroz@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=669566

Review-Url: https://codereview.chromium.org/2568883003
Cr-Commit-Position: refs/heads/master@{#438074}

tools/mb/mb_config.pyl

@@ -1422,11 +1422,11 @@
     ],
 
     'ubsan_release_bot': [
-      'ubsan', 'ubsan_no_recover_hack', 'release_bot',
+      'ubsan', 'release_bot',
     ],
 
     'ubsan_vptr_edge_release_bot': [
-      'ubsan_vptr', 'ubsan_no_recover_hack', 'edge', 'release_bot',
+      'ubsan_vptr', 'edge', 'release_bot',
     ],
 
     'ubsan_vptr_release_bot': [