Remove unused SQLite dependencies from NotificationService

Summary: This differential removes SQLite -related dependencies from NotificationService. Currently we do not update SQLite from NotificationService so keeping its dependencies in NotificationService's dependencies compile sources is a bad practice. Related context is here: https://linear.app/comm/issue/ENG-1979/using-rust-with-sqlite

Test Plan: Build the app.

Reviewers: tomek, atul

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D5930