Remove time inefficient loop in not_blocked_items #3598

Job	Run time
context	4s
test_make_docker_configuration	16s
Build CI Image	3m 42s
docs_build	2m 6s
locales	3m 31s
test_run_docker_action	2m 24s
test_main / test_config	6s
test / test (Needs Locale Compilation, docker-compose.yml:docker-compose.ci.yml, make compile_locales ma...	3m 46s
test / test (Static Assets, docker-compose.yml:docker-compose.ci.yml, make test_static_assets)	2m 39s
test / test (Internal Routes, docker-compose.yml:docker-compose.ci.yml, make test_internal_routes_allowed)	3m 23s
test / test (Elastic Search, docker-compose.yml:docker-compose.ci.yml, make test_es_tests)	4m 37s
test / test (Codestyle, web, docker-compose.yml:docker-compose.ci.yml, make lint-codestyle)	2m 30s
test / test (Manage Check, web nginx, docker-compose.yml:docker-compose.ci.yml, make check, true)	2m 6s
test_main / test_main (1)	5m 8s
test_main / test_main (2)	4m 55s
test_main / test_main (3)	5m 20s
test_main / test_main (4)	5m 25s
test_main / test_main (5)	4m 46s
test_main / test_main (6)	4m 57s
test_main / test_main (7)	5m 34s
test_main / test_main (8)	5m 14s
test_main / test_main (9)	5m 15s
test_main / test_main (10)	5m 30s
test_main / test_main (11)	5m 55s
test_main / test_main (12)	5m 35s
test_main / test_main (13)	5m 3s
test_main / test_main (14)	5m 0s
docs_deploy	0s
test_main / test_log	6s
Push Production Docker Image (GAR)	0s
Push Production Docker Image (Dockerhub)	0s
	1h 44m 53s

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