Refactor all remove queries not to use ORM

Summary: This differential refactors all remove queries not to use ORM.

Test Plan: Execute tests in https://phab.comm.dev/D10711. Remove queries are covered there.

Reviewers: kamil, michal

Reviewed By: kamil

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D10707