Fixed #34445 -- Fixed string-casting of non-string lazy objects.

This removes __text_cast() as it's the same as __cast().
_delegate_bytes and __delegate_text are mutually exclusive so the
`if self._delegate_bytes` branch in __cast() is unreachable.

Co-Authored-By: David Sanders <shang.xiao.sanders@gmail.com>

tests/utils_tests/test_functional.py

@@ -233,6 +233,10 @@ class FunctionalTests(SimpleTestCase):
         with self.assertRaisesMessage(ValueError, msg):
             lazy_obj()
 
+    def test_lazy_str_cast_mixed_result_types(self):
+        lazy_value = lazy(lambda: [1], str, list)()
+        self.assertEqual(str(lazy_value), "[1]")
+
     def test_classproperty_getter(self):
         class Foo:
             foo_attr = 123