Remove the 'http_lock' and 'file_lock' code from webkitpy.

Tools/Scripts/webkitpy/common/system/systemhost_mock.py

Index: Tools/Scripts/webkitpy/common/system/systemhost_mock.py
diff --git a/Tools/Scripts/webkitpy/common/system/systemhost_mock.py b/Tools/Scripts/webkitpy/common/system/systemhost_mock.py
index a529f34831286e9a4c893dd008d9a17411da52de..4667b08b9ab8df24ab6151a71dc533e42567fe9e 100644
--- a/Tools/Scripts/webkitpy/common/system/systemhost_mock.py
+++ b/Tools/Scripts/webkitpy/common/system/systemhost_mock.py
@@ -29,7 +29,6 @@
 from webkitpy.common.system.environment import Environment
 from webkitpy.common.system.executive_mock import MockExecutive
 from webkitpy.common.system.filesystem_mock import MockFileSystem
-from webkitpy.common.system.file_lock_mock import MockFileLock
 from webkitpy.common.system.platforminfo_mock import MockPlatformInfo
 from webkitpy.common.system.user_mock import MockUser
 from webkitpy.common.system.workspace_mock import MockWorkspace
@@ -51,6 +50,3 @@ class MockSystemHost(object):
 
     def copy_current_environment(self):
         return Environment({"MOCK_ENVIRON_COPY": '1'})
-
-    def make_file_lock(self, path):
-        return MockFileLock(path)