Remove some configures in RMAN

  Hi all,

   Use SHOW ALL in RMAN, there are some configured with multi device types like as:

---------------------------------------------------------------------------------------------------------------------------------------------------------------  

   CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/u01/app/backup/ctl_%d_%F';

   CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE STB TO '%F'; # default

   CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE SBT_TAPE TO '%F'; # default

   ...

   CONFIGURE DEVICE TYPE 'STB' PARALLELISM 3 BACKUP TYPE TO BACKUPSET;

   CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 2 BACKUP TYPE TO BACKUPSET;

   CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

   CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE STB TO 1; # default

   CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default