BUG: Remove all calls to get_ml_client outside v2 (#665)

There was still another call to get_ml_client that was asking for
credentials again preventing running on aml v1 strictly

hi-ml/src/health_ml/runner.py

@@ -261,7 +261,7 @@ class Runner:
             else:
                 hyperparam_args = self.lightning_container.get_hyperparam_args()
                 hyperdrive_config = None
-            ml_client = get_ml_client()
+            ml_client = get_ml_client() if not self.experiment_config.strictly_aml_v1 else None
 
             env_file = choose_conda_env_file(env_file=self.experiment_config.conda_env)
             logging.info(f"Using this Conda environment definition: {env_file}")