chore: systematic syncthing_build_info metric

Signed-off-by: Jakob Borg <jakob@kastelo.net>

cmd/stdiscosrv/main.go

@@ -14,7 +14,6 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
-	"runtime"
 	"time"
 
 	"github.com/alecthomas/kong"
@@ -96,8 +95,6 @@ func main() {
 	}
 	slog.Info(build.LongVersionFor("stdiscosrv"))
 
-	buildInfo.WithLabelValues(build.Version, runtime.Version(), build.User, build.Date.UTC().Format("2006-01-02T15:04:05Z")).Set(1)
-
 	var cert tls.Certificate
 	if !cli.HTTP {
 		var err error

cmd/stdiscosrv/stats.go

@@ -11,14 +11,6 @@ import (
 )
 
 var (
-	buildInfo = prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Namespace: "syncthing",
-			Subsystem: "discovery",
-			Name:      "build_info",
-			Help:      "A metric with a constant '1' value labeled by version, goversion, builduser and builddate from which stdiscosrv was built.",
-		}, []string{"version", "goversion", "builduser", "builddate"})
-
 	apiRequestsTotal = prometheus.NewCounterVec(
 		prometheus.CounterOpts{
 			Namespace: "syncthing",
@@ -132,7 +124,7 @@ const (
 )
 
 func init() {
-	prometheus.MustRegister(buildInfo,
+	prometheus.MustRegister(
 		apiRequestsTotal, apiRequestsSeconds,
 		lookupRequestsTotal, announceRequestsTotal,
 		replicationSendsTotal, replicationRecvsTotal,