INT 21 - Novell NetWare - PRINT SERVICES - CANCEL SPECIFIC LPT CAPTURE
        AH = DFh
        DL = 06h
        DH = LPT port (00h-02h)
Return: AL = status
            00h successful
Desc:   this function ends the capture of the specified LPT, removes the job
          from the print queue, and deletes the capture file unless it is a
          permanent capture file
Notes:  this function is supported by Advanced NetWare 2.1+
        after this call, the specified LPT defaults to local printing
SeeAlso: AH=DFh/DL=04h,AH=DFh/DL=05h,AH=DFh/DL=07h