Remove httpConnector and httpListener references as they have been dropped from the router

[fgiorgetti]

Describe the bug A recent router PR has been merged removing http adaptors: https://github.com/skupperproject/skupper-router/pull/1617

We need Skupper V2 to get rid of them as well as config-sync and router logs are now filled with errors querying http related entities.

How To Reproduce Run a Skupper v2 deployment using skupper-router:main.

Expected behavior No more errors on both components.

Environment details

• Skupper V2
• skupper-router:main

[grs]

Fixed by #1706