refactor: use default "needstickers" function

most pairlists use False - so we can use this default and omit tons of lines.

freqtrade/plugins/pairlist/IPairList.py

@@ -107,7 +107,6 @@ class IPairList(LoggingMixin, ABC):
         return self.__class__.__name__
 
     @property
-    @abstractmethod
     def needstickers(self) -> bool:
         """
         Boolean property defining if tickers are necessary.