[rt-users] Custom Field appears twice

[Mathew Walker]

so... what would be the preferred "workaround" if it exists?

in the ObjectCustomFields table, i see 3 entries.  two pertaining to my 
CustomField that appears twice.  Could one just remove one of those rows?  
the third being an old CF from my 3.2 which is hanging around for some 
reason and adding another quirk to my mix.

If I wanted to delete a custom field permanently, should i just do it via 
the backend?  ie. my old 3.2 CF that's hanging around.