Removed abstract methods from BaseStrategy class

Author: chillaq

splitio/engine/strategies/base_strategy.py

@@ -8,20 +8,5 @@ def process_impressions(self):
         """
         Return a list(impressions) object
 
-        """
-        pass
-
-    @abc.abstractmethod
-    def truncate_impressions_time(self):
-        """
-        Return list(impressions) object
-
-        """
-        pass
-
-    def get_counts(self):
-        """
-        Return A list of counter objects.
-
         """
         pass