test: remove opi-nvidia-server from opi-test deps

opi-nvidia-server is removed from opi-test deps, since opi-test
should depend on only other tests. And if those tests need
opi-nvidia-server, they should specify it explicitly in their
own depends_on section.

Signed-off-by: Artsiom Koltun <artsiom.koltun@intel.com>

docker-compose.yml

@@ -75,9 +75,6 @@ services:
     image: docker.io/namely/grpc-cli
     networks:
       - opi
-    depends_on:
-      opi-nvidia-server:
-        condition: service_healthy
     command: ls opi-nvidia-server:50051 opi_api.storage.v1.FrontendNvmeService -l
 
   opi-client: