The message ..is running and returns true should be removed

Current Situation

When using a pre-processing implentation with java that inherits from JobSchedulerAdapter the default implentention api methods spooler_process_before, spooler_process_after, spooler_task_before and spooler_task_after will be executed. The default implementations are writing with info level the message " ..is running and returns true" to the info log.

Desired Behaviour

The default implementation should not create output to the log as these methods are empty.