Summary: As direct mode is now being removed vizier no longer need a certmgr service. Remove certmgr.

Test Plan: Test vizier RC with an operator RC

Reviewers: michelle, philkuz

Reviewed By: michelle

JIRA Issues: PP-3334
Signed-off-by: Vihang Mehta <vihang@pixielabs.ai>

Differential Revision: https://phab.corp.pixielabs.ai/D11204

GitOrigin-RevId: 90b0053e0ee6cedbdb619a5d3b5fb2e88ff1d958