BibTeX mode --- remove unwanted fields

[N. Raghavendra]

Is there a way to remove unwanted fields from a BibTeX entry when doing
`bibtex-clean-entry'?  I'd like to have a variable `my-bibtex-fields'
with a value like

'("author" "editor" "title" "journal" "year" "publisher" "doi" "url" ...)

and kill any field that doesn't belong to `my-bibtex-fields', when I run
`bibtex-clean-entry' on an entry.

Cheers,
Raghu.

--
N. Raghavendra <raghu@hri.res.in>, http://www.retrotexts.net/
Harish-Chandra Research Institute, http://www.hri.res.in/