[TASK] Changes a logging message severity.

Comparing with empty data is an information that is not that necessary.

hshetl/transformers.py

@@ -127,7 +127,7 @@ class CompareTransformer(AbstractTransformer):
 
     def create_container(self):
         if self.target is None:
-            logging.info('Creating empty target, this results in compare with a big bunch of insert.')
+            logging.debug('Creating empty target, this results in compare with a big bunch of insert.')
             self.target = Container(name = self.name + '_nonetarget',
                                     properties = self.entity.properties)
             self.entity.add(self.target)