One more deprecation API documentation fix (#761)

Author: mauvilsa

jsonargparse/_core.py

@@ -1625,8 +1625,7 @@ def dump_header(self, dump_header: Optional[List[str]]):
         self._dump_header = dump_header
 
 
-from ._deprecated import instantiate_subclasses_patch, parse_as_dict_patch  # noqa: E402
+from ._deprecated import parse_as_dict_patch  # noqa: E402
 
-instantiate_subclasses_patch()
 if "SPHINX_BUILD" not in os.environ:
     parse_as_dict_patch()

jsonargparse/_deprecated.py

@@ -171,29 +171,6 @@ def patched_save(self, cfg: Union[Namespace, Dict[str, Any]], *args, multifile:
     ArgumentParser.save = patched_save
 
 
-@deprecated(
-    """
-    instantiate_subclasses was deprecated in v4.0.0 and will be removed in v5.0.0.
-"""
-)
-def instantiate_subclasses(self, cfg: Namespace) -> Namespace:
-    """Calls instantiate_classes with instantiate_groups=False.
-
-    Args:
-        cfg: The configuration object to use.
-
-    Returns:
-        A configuration object with all subclasses instantiated.
-    """
-    return self.instantiate_classes(cfg, instantiate_groups=False)
-
-
-def instantiate_subclasses_patch():
-    from ._core import ArgumentParser
-
-    ArgumentParser.instantiate_subclasses = instantiate_subclasses
-
-
 @deprecated(
     """
     ActionEnum was deprecated in v3.9.0 and will be removed in v5.0.0. Enums now
@@ -584,6 +561,15 @@ def error_handler(self, error_handler):
         else:
             raise ValueError("error_handler can be either a Callable or None.")
 
+    @deprecated(
+        """
+        instantiate_subclasses was deprecated in v4.0.0 and will be removed in v5.0.0.
+        Instead use instantiate_classes.
+    """
+    )
+    def instantiate_subclasses(self, cfg: Namespace) -> Namespace:
+        return self.instantiate_classes(cfg, instantiate_groups=False)  # type: ignore[attr-defined]
+
     @deprecated(
         """
         add_dataclass_arguments was deprecated in v4.35.0 and will be removed in