Remove a bunch of cruft from //build.

build/inverse_depth.py

Index: build/inverse_depth.py
diff --git a/build/inverse_depth.py b/build/inverse_depth.py
deleted file mode 100755
index ce7a6abb68a6ef9cee80ad373c5c2936b1edf85f..0000000000000000000000000000000000000000
--- a/build/inverse_depth.py
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import os
-import sys
-
-
-def DoMain(argv):
-  depth = argv[0]
-  return os.path.relpath(os.getcwd(), os.path.abspath(depth))
-
-
-def main(argv):
-  if len(argv) < 2:
-    print "USAGE: inverse_depth.py depth"
-    return 1
-  print DoMain(argv[1:])
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv))