gitserver/client: remove v1 response fallback logic
Created by: unknwon
Our gitserver no longer responses v1 format for the "/is-repo-cloneable" route, thus removing the fallback logic on the client side.
Test plan: CI
Created by: unknwon
Our gitserver no longer responses v1 format for the "/is-repo-cloneable" route, thus removing the fallback logic on the client side.
Test plan: CI