Disable deprecation logs in prod mode (#663)

Author: botisSmile

api/config/packages/monolog.yaml

@@ -56,7 +56,7 @@ when@prod:
                 process_psr_3_messages: false
                 channels: ["!event", "!doctrine"]
             deprecation:
-                type: stream
+                type: 'null' # Disable deprecation when APP_ENV=prod
                 channels: [deprecation]
-                path: php://stderr
-                formatter: monolog.formatter.json
+                #path: php://stderr
+                #formatter: monolog.formatter.json