Tidy up tests

tests/test_playlists.py

@@ -1,5 +1,4 @@
 # Standard library imports
-import datetime as dt
 import os
 import unittest
 
@@ -64,12 +63,6 @@ class MyTestCase(unittest.TestCase):
     def down(self):
         db.drop_all()
 
-    # @with_updown
-    # def test_some_property(self):
-    #     with self.qtbot.waitSignal(self.widget.my_signal, timeout=300):
-    #         self.widget.do_thing()
-    #     self.assertEqual(self.widget.get_thing(), 'foo')
-
     @with_updown
     def test_init(self):
         """Just check we can create a playlist_tab"""