R1:00bd824781d2

Remove the "deprecated calls in the last 30 days" setup warning

Summary: Ref T9980. I don't think this is actually useful, and plan to give users and administrators more powerful tools instead.

Test Plan: Loaded setup warnings.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9980

Differential Revision: https://secure.phabricator.com/D14778