Clean up related to isolated env

- Made  make target names consistent with our other commands
- Found some unnecessary code, deleted it

tools/docker-isolated-override.yml

@@ -13,6 +13,4 @@ services:
     hostname: isolated
     volumes:
       - "../awx/main/isolated:/awx_devel"
-      - "../awx/lib:/awx_lib"
-      - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
     privileged: true