Update Doxygen file blocks to remove copyright and license information
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index 35010f8..e051751 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -2,7 +2,8 @@
  * \file platform.h
  *
  * \brief mbed TLS Platform abstraction layer
- *
+ */
+/*
  *  Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
  *  SPDX-License-Identifier: Apache-2.0
  *