Drop ip-policy documentation

The IP policy included in the manifest is not anymore applicable for the project under EF.

Signed-off-by: Andrei Gherzan andrei.gherzan@huawei.com

ip-policy/index.rst

-.. SPDX-FileCopyrightText: Huawei Inc.
-..
-.. SPDX-License-Identifier: CC-BY-4.0
-
-Intellectual Property Compliance Policy
-#######################################
-
-.. toctree::
-   :maxdepth: 1
-
-   ip-policy_policy/index
-   ip-policy_implementation-guidelines/index