fix: bogus handler never implemented

ccnode/handlers.py

@@ -782,12 +782,6 @@ class NodeHandler(RpcHandler):
             res['checksum'] = job.get_checksum()
         return res
     
-    @pure
-    def vol_import_list(self):
-        '''
-        '''
-        raise NotImplementedError()
-    
     @pure
     def vol_import_cancel(self, jid):
         '''