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

contributing/upstream_contribution_process.rst

@@ -14,7 +14,7 @@ Contributing to Projects not Maintained by |main_project_name| Team
 Overview
 ********
 
-In order to comply with :ref:`Upstream first<sec-upstream>` rule and Open Source licenses requirements, |main_project_name| developers collaborate with several upstream projects to submit fixes, improvements, bug reports, problem investigation results etc. Contribution must be made in accordance with upstream project policy using the tooling upstream project prefers such as mailing list, github/gitlab pull/merge requests, etc.
+In order to comply with "upstream first" rule and Open Source licenses requirements, |main_project_name| developers collaborate with several upstream projects to submit fixes, improvements, bug reports, problem investigation results etc. Contribution must be made in accordance with upstream project policy using the tooling upstream project prefers such as mailing list, github/gitlab pull/merge requests, etc.
 
 .. _sec_upstream_contrib_signoff: