A maintenance channel is not required when DELETE is used with a file that is disk-only. I would try adding a release channel c1; in the code:

Code:
{
	CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO 'C:\BACKUP\FULL\TESTCF_TEST_%F';
     	allocate channel c1 device type disk format 'C:\BACKUP\FULL\TESTDF_TEST_%U';
      	backup INCREMENTAL level=0 database plus archivelog delete input;
	release channel c1;
	delete FORCE noprompt obsolete;
    }