remove filtered deck restriction on stats

aqt/main.py

@@ -693,13 +693,6 @@ title="%s">%s</button>''' % (
         deck = self._selectedDeck()
         if not deck:
             return
-        if deck['dyn']:
-            showWarning(_("""\
-As cards are removed from a filtered deck as they are answered, viewing the \
-statistics of a filtered deck will only show you reviews for cards with \
-multiple steps. To get an accurate report, please empty the filtered deck \
-and check the statistics for a home deck instead."""))
-            return
         aqt.stats.DeckStats(self)
 
     def onPrefs(self):