OCTAVE_DEPRECATED and cset 27594

[Rik]

jwe,

I was reviewing this changeset

changeset:   27594:e091e09d26f0
user:        John W. Eaton <address@hidden>
date:        Thu Oct 31 00:51:45 2019 -0400
summary:     restore some symbol table functions for backward compatibility

which introduces many lines in symtab.h like this one

    // OCTAVE_DEPRECATED (V, "use 'interpreter::at_top_level' instead")
    bool at_top_level (void);

Should the deprecation warning be removed since it is not used?  Or, if it
is going to be used in the future, should we put in an Arabic numeral for
the version number rather than a Roman one?  The rest of the
OCTAVE_DEPRECATED instances use 5, 6, or 7 rather than "V".

--Rik