New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/32419#discussion_r686318070

Comment:
yes, please remove all mentions of $pkgname in $distfiles

When updating a package, we want to keep using the same distfiles string, just bump the version and fix the checksum, so having only one place where we need to change the version is very useful, don't remove it.