[chore]: Remove comments from original SampleIME

src/Thread/ThreadMgrEventSink.cpp

@@ -1,10 +1,3 @@
-// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
-// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
-// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
-// PARTICULAR PURPOSE.
-//
-// Copyright (c) Microsoft Corporation. All rights reserved
-
 #include "Private.h"
 #include "Globals.h"
 #include "MetasequoiaIME.h"