Revert "Add ability to override breadcrumbs block"
Revert "Add ability to override breadcrumbs block"

This reverts commit 9eb52ee276d43a2656b29f272d1665070eb38d37.

uktrade/data-hub-fe-beta2,uktrade/data-hub-frontend,uktrade/data-hub-frontend,uktrade/data-hub-frontend,uktrade/data-hub-fe-beta2