python: remove redundant :type docstring

Sphinx gets it from the type annotation.

Author: bluetech

src/_pytest/python.py

@@ -1192,7 +1192,7 @@ def parametrize(
             If N argnames were specified, argvalues must be a list of
             N-tuples, where each tuple-element specifies a value for its
             respective argname.
-        :type argvalues: Iterable[_pytest.mark.structures.ParameterSet | Sequence[object] | object]
+
         :param indirect:
             A list of arguments' names (subset of argnames) or a boolean.
             If True the list contains all names from the argnames. Each