Add patch 'remove-dependabot-config'

Summary:
This diff adds a patch to the `3.14` Meta-internal fork.

Removes the dependabot config as we don't want to handle these directly.

Reviewed By: itamaro

Differential Revision: D84632676

fbshipit-source-id: 3518fcd14372b49c4ecdccf2a985d9a25ee78495

Author: jbower-fb