feat(config): disable logging.to_files

Author: yidinghan

apm-server.reference.yml

@@ -777,7 +777,7 @@ setup.kibana:
 
 # Logging to rotating files. Set logging.to_files to false to disable logging to
 # files.
-logging.to_files: true
+logging.to_files: false
 logging.files:
   # Configure the path where the logs are written. The default is the logs directory
   # under the home path (the binary location).