Fix useless err parameter

cmd/app.go

@@ -88,7 +88,7 @@ func main() {
 		log.Fatalf("OpenID Connect discovery failed: %s", err)
 	}
 
-	sessionPath, sessionAuthKey, sessionEncKey := configureSessionParameters(config, err)
+	sessionPath, sessionAuthKey, sessionEncKey := configureSessionParameters(config)
 	services.InitSessionStore(logger, sessionPath, sessionAuthKey, sessionEncKey)
 
 	authMiddleware := handlers.Authenticate(ctx, logger, oidcClientId)
@@ -144,7 +144,7 @@ func main() {
 	handlers.StartApplication(logger, ctx, server, config)
 }
 
-func configureSessionParameters(config *koanf.Koanf, err error) (string, []byte, []byte) {
+func configureSessionParameters(config *koanf.Koanf) (string, []byte, []byte) {
 	sessionPath := config.MustString("session.path")
 	sessionAuthKey, err := base64.StdEncoding.DecodeString(config.String("session.auth-key"))
 	if err != nil {