Search UI - remove get documents urls override

Currently the search ui needs to override the get filing documents urls function because the business api blocks public users from getting the list even though it is public information. This means we have search-ui -> search-api -> business-api (with SA token) to get the documents available under a filing.

This ticket is to allow public to access the filing document list (names + urls NOT actual documents) via the business-api and remove the need for the override function in the business ledger component