Pylint fixes.

rtv/subscription.py

@@ -50,7 +50,7 @@ class SubscriptionPage(Page):
 
         self.active = False
 
-    def _draw_item(self, win, data, inverted=False):
+    def _draw_item(self, win, data, inverted):
         n_rows, n_cols = win.getmaxyx()
         n_cols -= 1  # Leave space for the cursor in the first column