Merge pull request #4658 from opensafely-core/remove-unused-l4-file-v… #12

Job	Run time
test-and-build-docker-image / check	41s
test-and-build-docker-image / lint-dockerfile	5s
test-and-build-docker-image / test	3m 13s
test-and-build-docker-image / docker-test	3m 21s
deploy	2m 31s
	9m 51s

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