Summary:
requires_root is defined but not actually supported in any way, so it is misleading. Remove it.

Note that D3148 is dependent on this.

Test Plan: Jenkins

Reviewers: zasgar, #engineering, yzhao

Reviewed By: zasgar, #engineering, yzhao

Differential Revision: https://phab.corp.pixielabs.ai/D3150

GitOrigin-RevId: 413b3608c23b17322cbbed384d76ef6acfa7ed0a