Deprecate SageMakerTrainingPrintLogTrigger

[vincbeck]

This trigger is supposed to do the same job as SageMakerTrigger but with printing logs. The reasons to deprecate it:

• Printing logs in a trigger does not add much value to the DAG author since logs go to the triggerer and not task logs
• The trigger SageMakerTrainingPrintLogTrigger contains some bugs since the operator SageMakerTrainingOperator does not work when created with deferrable=True and print_log=True. The trigger wait indefinitely for the job to complete
• Having two different triggers to achieve the same thing with the only difference one is pushing more logs than the other does not make a lot of sense

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