Fix copy-paste error. I saw this exception on breakpad.

TBR=bradnelson

Review URL: http://codereview.chromium.org/2850014

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@50232 0039d316-1c4b-4281-b951-d872f2087c98

scm.py

@@ -459,7 +459,7 @@ class SVN(object):
                 # Warning: It's bad, it assumes args[2] is the directory
                 # argument.
                 if os.path.isdir(args[2]):
-                  chromium_utils.RemoveDirectory(args[2])
+                  gclient_utils.RemoveDirectory(args[2])
                 break
             else:
               # No known svn error was found, bail out.