How to automatically delete 1 specific copy of an RMAN-backup

Hi,
We have a database with a backupstrategy that it backups via RMAN to 2 destinations:

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configure retention policy to recovery window of 31 days;
configure controlfile autobackup format for device type disk to '\\ip-adres\share\oracle_backup\backup\xmcp\%F';
configure controlfile autobackup on;
configure default device type to disk;
configure device type disk parallelism 1;
configure channel device type disk format '\\ip-adres\share\oracle_backup\backup\xmcp\%d_%s_%t_%p';

RUN
{
set command id to 'RMAN onl d0 to disk';
backup archivelog all delete input;
backup as compressed backupset incremental level 0 database;
backup archivelog all delete input;