Remove constraints unnecessary since buster (oldstable)

* Build-Depends: Drop versioned constraint on dh-golang.

Changes-By: deb-scrub-obsolete

debian/control

@@ -5,7 +5,7 @@ Maintainer: Debian Electronics Team <pkg-electronics-devel@lists.alioth.debian.o
 Uploaders: Rock Storm <rockstorm@gmx.com>
    , Geert Stappers <stappers@debian.org>
 Build-Depends: debhelper-compat (= 13),
-               dh-golang (>= 1.6.3),
+               dh-golang,
                golang-any,
                golang-github-go-errors-errors-dev,
                golang-github-stretchr-testify-dev