Remove unnecessary migration function as this default value should be picked up from the DEFAULT_PREFS dictionary

deluge/core/core.py

@@ -120,7 +120,6 @@ class Core(component.Component):
 
         # Get the core config
         self.config = deluge.configmanager.ConfigManager("core.conf")
-        self.config.run_converter((0, 1), 2, self.__migrate_config_1_to_2)
         self.config.save()
 
         # If there was an interface value from the command line, use it, but
@@ -171,12 +170,6 @@ class Core(component.Component):
         except Exception, e:
             log.warning("Failed to load lt state: %s", e)
 
-
-    def __migrate_config_1_to_2(self, config):
-        if 'sequential_download' not in config:
-            config['sequential_download'] = False
-        return config
-
     def save_dht_state(self):
         """Saves the dht state to a file"""
         try: