[Core] Remove grpcio import from usage_lib (ray-project#36542)

This is needed for ray-project#35472

python/ray/_private/usage/usage_lib.py

@@ -60,9 +60,8 @@
 import ray
 import ray._private.ray_constants as ray_constants
 import ray._private.usage.usage_constants as usage_constant
-from ray._private import gcs_utils
 from ray.experimental.internal_kv import _internal_kv_initialized, _internal_kv_put
-from ray.core.generated import usage_pb2
+from ray.core.generated import usage_pb2, gcs_pb2
 
 logger = logging.getLogger(__name__)
 TagKey = usage_pb2.TagKey
@@ -496,7 +495,7 @@ def get_total_num_nodes_to_report(gcs_client, timeout=None) -> Optional[int]:
  result = gcs_client.get_all_node_info(timeout=timeout)
  total_num_nodes = 0
  for node_id, node_info in result.items():
- if node_info["state"] == gcs_utils.GcsNodeInfo.GcsNodeState.ALIVE:
+ if node_info["state"] == gcs_pb2.GcsNodeInfo.GcsNodeState.ALIVE:
  total_num_nodes += 1
  return total_num_nodes
  except Exception as e: