diff --git a/3rdparty/cpprestsdk/samples/FacebookDemo/pch.cpp b/3rdparty/cpprestsdk/samples/FacebookDemo/pch.cpp
deleted file mode 100644
index db0f841de3c2ac21628502530430e98d00764b1f..0000000000000000000000000000000000000000
--- a/3rdparty/cpprestsdk/samples/FacebookDemo/pch.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-/***
-* ==++==
-*
-* Copyright (c) Microsoft Corporation. All rights reserved. 
-* Licensed under the Apache License, Version 2.0 (the "License");
-* you may not use this file except in compliance with the License.
-* You may obtain a copy of the License at
-* http://www.apache.org/licenses/LICENSE-2.0
-* 
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*
-* ==--==
-* =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
-*
-* pch.cpp - Source file to generate pre-compiled header.
-* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-****/
-
-#include "pch.h"