Remove unused clobber option from compile.py

scripts/slave/compile.py

Index: scripts/slave/compile.py
diff --git a/scripts/slave/compile.py b/scripts/slave/compile.py
index de55ec62eac6f49608fe6d2f0dca7ebeac6ec651..ccd73399e3c5723feac5f38b799407831e0986c0 100755
--- a/scripts/slave/compile.py
+++ b/scripts/slave/compile.py
@@ -406,16 +406,6 @@ def main_ninja(options, args, env):
       print 'Updating environment.{x86,x64} files.'
       UpdateWindowsEnvironment(options.target_output_dir, env)
 
-    if options.clobber:
-      print 'Removing %s' % options.target_output_dir
-      # Deleting output_dir would also delete all the .ninja files necessary to
-      # build. Clobbering should run before runhooks (which creates .ninja
-      # files). For now, only delete all non-.ninja files.
-      # TODO(thakis): Make "clobber" a step that runs before "runhooks".
-      # Once the master has been restarted, remove all clobber handling
-      # from compile.py, https://crbug.com/574557
-      build_directory.RmtreeExceptNinjaOrGomaFiles(options.target_output_dir)
-
     command.extend(options.build_args)
     command.extend(args)
 
@@ -472,8 +462,6 @@ def get_target_build_dir(options):
 
 def get_parsed_options():
   option_parser = optparse.OptionParser()
-  option_parser.add_option('--clobber', action='store_true', default=False,
-                           help='delete the output directory before compiling')
   option_parser.add_option('--target', default='Release',
                            help='build target (Debug or Release)')
   option_parser.add_option('--src-dir', default=None,