Got rid of the timetz type entirely. This was a bit trickier than I

hoped it would be, but not too bad.  A test had to change:
time.__setstate__() can no longer add a non-None tzinfo member to a time
object that didn't already have one, since storage for a tzinfo member
doesn't exist in that case.

Lib/test/test_datetime.py

@@ -1857,7 +1857,7 @@ class TestTimeTZ(TestTime, TZInfoBase):
         tinfo = PicklableFixedOffset(-300, 'cookie')
         orig = self.theclass(5, 6, 7, tzinfo=tinfo)
         state = orig.__getstate__()
-        derived = self.theclass()
+        derived = self.theclass(tzinfo=FixedOffset(0, "UTC", 0))
         derived.__setstate__(state)
         self.assertEqual(orig, derived)
         self.failUnless(isinstance(derived.tzinfo, PicklableFixedOffset))