Remove the "the tree is burning!" warning previously shown
when landing patches.  It was a dream.  But it's just noise now.

Some bots will require a restart to notice the removal of the option
so I've left the --ignore-builders option in for now.

* Scripts/webkitpy/tool/bot/commitqueuetask_unittest.py:
* Scripts/webkitpy/tool/bot/patchanalysistask.py:
* Scripts/webkitpy/tool/commands/download.py:
* Scripts/webkitpy/tool/commands/download_unittest.py:
* Scripts/webkitpy/tool/commands/queues_unittest.py:
* Scripts/webkitpy/tool/steps/__init__.py:
* Scripts/webkitpy/tool/steps/commit.py:
* Scripts/webkitpy/tool/steps/ensurebuildersaregreen.py: Removed.
* Scripts/webkitpy/tool/steps/postdiffforrevert.py:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@94978 268f45cc-cd09-0410-ab3c-d52691b4dbfc