Removed add_all from protocol

Signed-off-by: Elena Khaustova <ymax70rus@gmail.com>

kedro/io/core.py

@@ -929,10 +929,6 @@ def add(self, ds_name: str, dataset: Any, replace: bool = False) -> None:
         """Add a new dataset to the catalog."""
         ...
 
-    def add_all(self, datasets: dict[str, Any], replace: bool = False) -> None:
-        """Add a new dataset to the catalog."""
-        ...
-
     def add_feed_dict(self, datasets: dict[str, Any], replace: bool = False) -> None:
         """Add datasets to the catalog using the data provided through the `feed_dict`."""
         ...