Remove Python 2.6 workaround

IPython/config/application.py

@@ -115,10 +115,7 b' class LevelFormatter(logging.Formatter):'
             record.highlevel = self.highlevel_format % record.__dict__
         else:
             record.highlevel = ""
-        if sys.version_info[:2] > (2,6):
-            return super(LevelFormatter, self).format(record)
-        else:
-            return logging.Formatter.format(self, record)
+        return super(LevelFormatter, self).format(record)
             
 
 class Application(SingletonConfigurable):