How to remove buttons with the config.xml file

Hello all,
I want to remove some buttons and parts from the Mission Planner. For example;
I want to remove setup part and also want to remove some actions buttons.
I am changing config.xml file. But some changes do not change on the Mission Planner.

The issue names config.xml and Mission Planner but no source file or test. Start by locating Mission Planner’s config.xml handling and comparing the requested setup and action-button removals with the supported options. Done means documenting the supported configuration or clearly recording which requested changes are unsupported.

Written by the indexing model from the issue text.