unmark unexpectedFailures related to posonly args tests

Lib/test/test_functools.py

@@ -500,8 +500,6 @@ class TestPartialMethod(unittest.TestCase):
 
     a = A()
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_arg_combinations(self):
         self.assertEqual(self.a.nothing(), ((self.a,), {}))
         self.assertEqual(self.a.nothing(5), ((self.a, 5), {}))

Lib/test/test_positional_only_arg.py

@@ -318,8 +318,6 @@ class PositionalOnlyTestCase(unittest.TestCase):
         with self.assertRaisesRegex(TypeError, r"g\(\) takes 2 positional arguments but 3 were given"):
             f(1,2)(3,4,5)
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_same_keyword_as_positional_with_kwargs(self):
         def f(something,/,**kwargs):
             return (something, kwargs)

Lib/test/test_typing.py

@@ -3739,8 +3739,6 @@ class TypedDictTests(BaseTestCase):
         self.assertEqual(Emp.__annotations__, {'name': str, 'id': int})
         self.assertEqual(Emp.__total__, True)
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_typeddict_special_keyword_names(self):
         TD = TypedDict("TD", cls=type, self=object, typename=str, _typename=int, fields=list, _fields=dict)
         self.assertEqual(TD.__name__, 'TD')