Remove control field Conflicts if the package is no longer in the repository

[Timur Birsh <taem@linukz.org>]

Hello Debian Developers,

I've recently uploaded (thanks to Bart Martens for sponsoring) my first 
package and want to adopt the next one. It's cd-discid [1]. Its 
debian/control file contains the Conflicts field. This package conflicts 
with cdgrab (<< 0.7), which is no longer exists in the repository. So, I 
have a question, may I remove Conflicts field safely?

1. http://packages.debian.org/sid/cd-discid

Thanks.
-- 
Timur