Simplify. NFC

src/main.go

@@ -12,6 +12,7 @@ import (
 
 	automemlimit "github.com/KimMachineGun/automemlimit/memlimit"
 	"github.com/c2h5oh/datasize"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 var config *Config
@@ -159,7 +160,7 @@ func main() {
 		go serve(pagesListener, http.HandlerFunc(ServePages))
 		go serve(caddyListener, http.HandlerFunc(ServeCaddy))
 		go serve(healthListener, http.HandlerFunc(ServeHealth))
-		go serve(metricsListener, NewMetricsHTTPHandler())
+		go serve(metricsListener, promhttp.Handler())
 
 		if config.Insecure {
 			log.Println("serve: ready (INSECURE)")

src/observe.go

@@ -6,7 +6,6 @@ import (
 	"runtime/debug"
 
 	"github.com/honeybadger-io/honeybadger-go"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func hasHoneybadger() bool {
@@ -26,7 +25,3 @@ func ObserveHTTPHandler(handler http.Handler) http.Handler {
 	}
 	return handler
 }
-
-func NewMetricsHTTPHandler() http.Handler {
-	return promhttp.Handler()
-}