revert experimental changes

sdk/ml/azure-ai-ml/azure/ai/ml/entities/_indexes/input/_index_data_source.py

@@ -3,6 +3,7 @@
 # ---------------------------------------------------------
 from typing import Union
 
+from azure.ai.ml._utils._experimental import experimental
 from azure.ai.ml.entities._inputs_outputs import Input
 from azure.ai.ml.constants._common import IndexInputType
 
@@ -12,6 +13,7 @@
 
 
 # Defines stuff related to supplying inputs for an index AKA the base data.
+@experimental
 class IndexDataSource:
     """Base class for configs that define data that will be processed into an ML index.
     This class should not be instantiated directly. Use one of its child classes instead.
@@ -28,6 +30,7 @@ def __init__(self, *, input_type: Union[str, IndexInputType]):
 # Field bundle for creating an index from files located in a Git repo.
 # TODO Does git_url need to specifically be an SSH or HTTPS style link?
 # TODO What is git connection id?
+@experimental
 class GitSource(IndexDataSource):
     """Config class for creating an ML index from files located in a git repository.
 
@@ -46,6 +49,7 @@ def __init__(self, *, url: str, branch_name: str, connection_id: str):
         super().__init__(input_type=IndexInputType.GIT)
 
 
+@experimental
 class LocalSource(IndexDataSource):
     """Config class for creating an ML index from a collection of local files.