Remove mission statement link from README as needed to test automatic doc import

Remove mission statement link from README as needed to test automatic doc import
(this change will be reverted)

Author: neatudarius

docs/README.md

@@ -15,4 +15,3 @@ This directory contains information about how the project works, goals, and comm
 - [code_of_conduct.md](./code_of_conduct.md): The Beman Project's code of conduct.
 - [faq.md](./faq.md): Frequently asked questions about the Beman Project.
 - [governance.md](./governance.md): The governance document outlines the structure of the Beman Project.
-- [mission.md](./mission.md): The mission statement of the Beman Project.