[FE] Remove swagger from BTC

[alagishev]

Build task consumer still exposes a swagger
At the same it has no REST API. At least it supposed to have no REST API.

During swagger removal need to consider reapproaching healthcheck for BTC container:

https://github.com/Netcracker/qubership-apihub/blob/main/docker-compose/apihub-generic/docker-compose.yml#L42C70-L42C78

https://github.com/Netcracker/qubership-apihub/blob/main/helm-templates/qubership-apihub/templates/qubership-apihub-build-task-consumer-deployment.yaml#L67

And need to check if any custom (not qubership) helm templates has to be updated as well