Our GitLab pipeline likes to mangle the package version when building a
snapshot: this causes `debian/control` to be re-generated which fails
because in that case this package has a unspecified build-dependency
on the latest `linux-support-*` package.

To avoid that in the past we dropped `debian/build/version-info` from
the list in `debian/control.md5sum`: keep doing so, even if it means
that we have to manually re-generate the control file from time to time.

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>