Remove use of deprecated http_host field in Gitaly RPCs
Currently there are 5 places these fields are defined:
❯ grep -r --include="*.proto" "http_host"
proto/remote.proto: string http_host = 3 [deprecated=true];
proto/remote.proto: string http_host = 5 [deprecated=true];
proto/repository.proto: string http_host = 3 [deprecated=true];
proto/repository.proto: string http_host = 4 [deprecated=true];
proto/repository.proto: string http_host = 5 [deprecated=true];
They are already marked for deprecation, we can remove them entirely in 16.0!
Edited by Karthik Nayak