Remove empty __init__ methods (#8816)

stdlib/xmlrpc/server.pyi

@@ -127,7 +127,6 @@ class XMLRPCDocGenerator:  # undocumented
     server_name: str
     server_documentation: str
     server_title: str
-    def __init__(self) -> None: ...
     def set_server_title(self, server_title: str) -> None: ...
     def set_server_name(self, server_name: str) -> None: ...
     def set_server_documentation(self, server_documentation: str) -> None: ...