Compatibility: 1.0+
Expects: AH    13H
DS:DX address of an unopened FCB (filespec may contain '?'s)
                                                                  
Returns: AL    0    if the file was deleted successfully
0ffH if file not found or access denied
                                                                  
Info: All matching filespecs in the current default directory on the
drive specified in the FCB are deleted.

If no matching filespecs are found, or if access is denied (as
when attempting to delete a file with a file attribute of
Read-Only), AL returns 0ffH.

See Also: Fn 41h (delete file)
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DOS Fn 13H: Delete File via FCB