Use a sort with the following SYSIN control statements. It looks for JTERM in column 66:
//SORT01 EXEC PGM=SORT
//SYSUDUMP DD SYSOUT=Z
//SYSOUT DD SYSOUT=Z
//SORTIN DD DISP=SHR,DSN=YOUR.CA7.BTI.OUTPUT
//SORTOUT DD DSN=YOUR.NEW.DATASET,UNIT=SYSDA,DISP=(NEW,CATLG),
// SPACE=(TRK,(1,1)),DCB=(BLKSIZE=0,LRECL=80,RECFM=FB)
//SYSIN DD *
INCLUDE COND=(66,5,CH,EQ,C'JTERM')
INREC FINDREP=(INOUT=(C' .',C' ',
C'..',C' ',
C'. ',C' '),
STARTPOS=02,ENDPOS=46)
OUTREC FIELDS=(C'DELETE,DSNBR=',2,44,23X)
SORT FIELDS=COPY
END
//