Recursively deletes all files and sub directories excluding the
    parent directory.

    You can specify only the following qualifiers with the /TREE
    qualifier:

    /ERASE      /GRAND_      /IGNORE     /LOG
                TOTAL
    /STYLE

                                  NOTE

    If DELETE/TREE command finds a symbolic link file, then only
    the symbolic link file is deleted. The symbolic link file cannot
    be traversed. This behavior is true for all the values of symbolic
    link search mode, namely, [NO]WILDCARD and [NO]ELLIPSIS.