Delete a bunch of dead python code.

sky/tools/webkitpy/tool/steps/abstractstep.py

Index: sky/tools/webkitpy/tool/steps/abstractstep.py
diff --git a/sky/tools/webkitpy/tool/steps/abstractstep.py b/sky/tools/webkitpy/tool/steps/abstractstep.py
deleted file mode 100644
index 9d7f2e07373665502137a8f32dd15e4effba2228..0000000000000000000000000000000000000000
--- a/sky/tools/webkitpy/tool/steps/abstractstep.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# Copyright (C) 2010 Google Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-import sys
-
-from webkitpy.common.system.executive import ScriptError
-from webkitpy.tool.steps.options import Options
-
-
-class AbstractStep(object):
-    def __init__(self, tool, options):
-        self._tool = tool
-        self._options = options
-
-    def _exit(self, code):
-        sys.exit(code)
-
-    @classmethod
-    def options(cls):
-        return [
-            # We need this option here because cached_lookup uses it.  :(
-            Options.git_commit,
-        ]
-
-    def run(self, state):
-        raise NotImplementedError, "subclasses must implement"