The Delete One or More Files routine deletes one or more
    files. The specification of the files to be deleted may include
    wildcards.

    LIB$DELETE_FILE is similar in function to the DCL command DELETE.

    Format

      LIB$DELETE_FILE  filespec [,default-filespec]

                       [,related-filespec] [,user-success-procedure]

                       [,user-error-procedure]

                       [,user-confirm-procedure]

                       [,user-specified-argument] [,resultant-name]

                       [,file-scan-context] [,flags]