Remove docutils.nodes.reference, which has no resemblance to the implementation (#5235)

Author: srittau

stubs/docutils/docutils/nodes.pyi

@@ -1,6 +1,3 @@
-from typing import Any, List
-
-class reference:
-    def __init__(self, rawsource: str = ..., text: str = ..., *children: List[Any], **attributes: Any) -> None: ...
+from typing import Any
 
 def __getattr__(name: str) -> Any: ...  # incomplete