Remove not-needed sentence

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>

Author: daverodgman

CONTRIBUTING.md

@@ -86,7 +86,7 @@ License and Copyright
 
 Unless specifically indicated otherwise in a file, Mbed TLS files are provided under a dual [Apache-2.0](https://spdx.org/licenses/Apache-2.0.html) OR [GPL-2.0-or-later](https://spdx.org/licenses/GPL-2.0-or-later.html) license. See the [LICENSE](LICENSE) file for the full text of these licenses. This means that users may choose which of these licenses they take the code under.
 
-Contributors must accept that their contributions are made under both the Apache-2.0 AND [GPL-2.0-or-later](https://spdx.org/licenses/GPL-2.0-or-later.html) licenses. This enables LTS (Long Term Support) branches of the software to be provided under either the Apache-2.0 or GPL-2.0-or-later licenses.
+Contributors must accept that their contributions are made under both the Apache-2.0 AND [GPL-2.0-or-later](https://spdx.org/licenses/GPL-2.0-or-later.html) licenses.
 
 All new files should include the standard SPDX license identifier where possible, i.e. "SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later".