util.stanza: Remove dead code
These cases are caught by `check_text(v, ..)` above. Those errors do not
contain the attribute however, which would have been nice.
return {
_all = {
},
default = {
["exclude-tags"] = "mod_bosh,storage,SLOW";
};
bosh = {
tags = "mod_bosh";
};
storage = {
tags = "storage";
};
}