removing experimental attribute from connection entity (#36688)

* removing experimental attribute from connection entity

* removed unused import stmt

Author: jayesh-tanna

sdk/ml/azure-ai-ml/azure/ai/ml/entities/_workspace/connections/workspace_connection.py

@@ -20,7 +20,6 @@
 )
 
 from azure.ai.ml._schema.workspace.connections.workspace_connection import WorkspaceConnectionSchema
-from azure.ai.ml._utils._experimental import experimental
 from azure.ai.ml._utils.utils import _snake_to_camel, camel_to_snake, dump_yaml_to_file
 from azure.ai.ml.constants._common import (
     BASE_PATH_CONTEXT_KEY,
@@ -72,7 +71,6 @@
 # Dev note: The acceptable strings for the type field are all snake_cased versions of the string constants defined
 # In the rest client enum defined at _azure_machine_learning_services_enums.ConnectionCategory.
 # We avoid directly referencing it in the docs to avoid restclient references.
-@experimental
 class WorkspaceConnection(Resource):
     """Azure ML connection provides a secure way to store authentication and configuration information needed
     to connect and interact with the external resources.