Remove experimental annotation from provision network (#34690)

* Remove experimental annotation from provision network

* remove unused import

Author: fredms

sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_store_operations.py

@@ -14,7 +14,6 @@
 from azure.ai.ml._restclient.v2023_08_01_preview.models import ManagedNetworkProvisionOptions
 from azure.ai.ml._scope_dependent_operations import OperationsContainer, OperationScope
 from azure.ai.ml._telemetry import ActivityType, monitor_with_activity
-from azure.ai.ml._utils._experimental import experimental
 from azure.ai.ml._utils._logger_utils import OpsLogger
 from azure.ai.ml._utils.utils import camel_to_snake
 from azure.ai.ml.constants import ManagedServiceIdentityType
@@ -505,7 +504,6 @@ def begin_delete(self, name: str, *, delete_dependent_resources: bool = False, *
 
     @distributed_trace
     @monitor_with_activity(ops_logger, "FeatureStore.BeginProvisionNetwork", ActivityType.PUBLICAPI)
-    @experimental
     def begin_provision_network(
         self,
         *,