Remove the Git repository synchronization functionality #5503

Job	Run time
verify_author	4s
run-full / search_cache / search_cache	4s
run-full / build	24m 27s
run-full / unit_testing	5m 8s
run-full / e2e_testing (actions_tasks)	2m 11s
run-full / e2e_testing (actions_tasks2)	2m 40s
run-full / e2e_testing (actions_tasks3)	2m 11s
run-full / rest_api_testing	3m 30s
run-full / e2e_testing (actions_objects)	2m 7s
run-full / e2e_testing (actions_objects2)	2m 21s
run-full / e2e_testing (actions_users)	3m 18s
run-full / e2e_testing (actions_projects_models)	4m 16s
run-full / e2e_testing (canvas3d_functionality)	2m 23s
run-full / e2e_testing (canvas3d_functionality_2)	2m 25s
run-full / e2e_testing (issues_prs)	2m 53s
run-full / e2e_testing (issues_prs2)	2m 25s
run-full / e2e_testing (features)	2m 7s
send_status	2s
	1h 4m 32s

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