Align the license header of open62541.pc.in

include/open62541.pc.in

@@ -1,16 +1,6 @@
-/*
- * Copyright (C) 2014-2017 the contributors, as stated in the AUTHORS
- * file
- *
- * This file is part of open62541. open62541 is free software: you can
- * redistribute it and/or modify it under the terms of the Mozilla
- * Public License v2.0, as stated in the LICENSE file provided with
- * open62541.
- *
- * open62541 is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@