[client] Remove outbound chains #9355

Job	Run time
build-cache	13s
api_benchmark (386, sqlite)	5m 29s
benchmark (386, sqlite)	7m 34s
api_benchmark (386, postgres)	8m 30s
test_management (386, sqlite)	6m 8s
benchmark (386, postgres)	10m 45s
api_benchmark (386, mysql)	9m 28s
test_management (386, postgres)	13m 54s
benchmark (386, mysql)	11m 38s
api_benchmark (amd64, sqlite)	4m 0s
test_management (386, mysql)	16m 42s
benchmark (amd64, sqlite)	8m 5s
api_benchmark (amd64, postgres)	6m 43s
test_management (amd64, sqlite)	5m 9s
benchmark (amd64, postgres)	10m 50s
api_benchmark (amd64, mysql)	7m 32s
test_management (amd64, postgres)	13m 39s
benchmark (amd64, mysql)	12m 40s
api_integration_test (386, sqlite)	5m 39s
test_management (amd64, mysql)	16m 22s
test (386)	7m 53s
api_integration_test (386, postgres)	13m 59s
test_client_on_docker	5m 5s
test (amd64)	9m 54s
api_integration_test (amd64, sqlite)	5m 7s
api_integration_test (amd64, postgres)	13m 29s
	3h 56m 27s

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