You're still removing linenoise? I replaced linenoise-ng so we don't have convertutf.c after someone complained that the console wasn't working in the debian package. I hoped you/they would remove that patch.
It's a licence matter AFAIK, I'll ask Jordi (Debian maintainer and author of the patch) if it's gone now.
Unapplying it won't help anyway, I had to remove optimization in order to have code built for i386.