Specifies a directory or directories to be removed from the list
    of source directories.
    Format
      SET NOSOURCE_DIRECTORY  [directory-spec [,directory-spec] . . . ]
1 – Parameter
 directory-spec [,directory-spec] . . .
    Specifies a list of directory specifications to be removed
    from the list of source directories. If you do not specify any
    parameter, LSE removes all directories from the list of source
    directories.