Hardcode 'editions' table name
Hardcode 'editions' table name

It's not clear why we're using `table_name` in these queries. As far as we can
tell, `table_name` will always be 'editions'. Hardcoding it makes it more
explicit.

We found the first one of these scopes added in
64eee76c54ef6c3af533a133a79842cd851304d8 but it didn't contain any information
as to why `table_name` was used.

alphagov/whitehall,robinwhittleton/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,robinwhittleton/whitehall,askl56/whitehall,alphagov/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,hotvulcan/whitehall,ggoral/whitehall,ggoral/whitehall,robinwhittleton/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,askl56/whitehall,hotvulcan/whitehall