test: remove service tests for converted services

deleted tests for services converted to docket:
- test_loop_service.py (LoopService no longer exists)
- test_scheduler.py
- test_telemetry.py
- test_cancellation_cleanup.py
- test_foreman.py
- test_late_runs.py
- test_pause_expirations.py
- test_repossessor.py

will reconstruct basic test coverage later by reviewing main branch tests

Author: zzstoatzz