[AIRFLOW-3603] QuboleOperator: Remove SQLCommand from SparkCmd documentation (#4411)
[AIRFLOW-3603] QuboleOperator: Remove SQLCommand from SparkCmd documentation (#4411)

[AIRFLOW-3603] QuboleOperator: Remove SQLCommand from SparkCmd Doc 
owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow