Drop dconf support (tool no longer maintained/available)

dconf used to be "a tool to collect a system's hardware and software
configuration", see https://github.com/dagwieers/dconf and
http://dag.wiee.rs/home-made/dconf/

But dconf is not maintained upstream anymore since ~12 years, is no
longer present in Debian and the dconf binary is shipped by Gnome's
dconf-cli instead nowadays.

Thanks: Christopher Bock

grml-hwinfo

@@ -332,8 +332,6 @@ cd "${OUTDIR}" || exit 1
 
     exectest dmidecode  && dmidecode > ./dmidecode
 
-    exectest dconf && dconf -o dconf
-
     if exectest mcelog ; then
       mcelog --dmi > mcelog_dmi 2>mcelog_dmi.error
     fi