warn -> debug

Author: ph

lib/logstash/outputs/s3.rb

@@ -341,7 +341,7 @@ def rotation_strategy
   end
 
   def clean_temporary_file(file)
-    @logger.warn("Removing temporary file", :file => file.path)
+    @logger.debug("Removing temporary file", :file => file.path)
     file.delete!
   end