AO3-6529 Prevent work imports from AO3 (#4981) #4976

Job	Run time
rake db:otwseed	1m 12s
rspec spec/controllers	12m 36s
rspec spec/models	6m 24s
rspec --exclude-pattern 'spec/{controllers,models}/*/.rb'	8m 49s
cucumber features/admins	7m 12s
cucumber features/bookmarks	4m 31s
cucumber features/collections	6m 10s
cucumber features/comments_and_kudos	6m 34s
cucumber features/gift_exchanges	7m 7s
cucumber features/importing	3m 2s
cucumber features/other_a	12m 22s
cucumber features/other_b	7m 14s
cucumber features/prompt_memes_a	5m 9s
cucumber features/prompt_memes_b	3m 45s
cucumber features/prompt_memes_c	5m 15s
cucumber features/search	9m 8s
cucumber features/tag_sets	3m 8s
cucumber features/tags_and_wrangling	6m 45s
cucumber features/users	5m 10s
cucumber features/works	13m 11s
	2h 14m 44s

Provide feedback