remove namespace

op-proposer/proposer/l2_output_submitter.go

@@ -383,7 +383,7 @@ func (l *L2OutputSubmitter) SendTransaction(ctx context.Context, tx *types.Trans
 
 	if l.metricsEnabled {
 		// Emit the proposed block Number
-		opmetrics.EmitBlockNumber(l.mr.BlockNumberGauge, "", receipt.BlockNumber)
+		opmetrics.EmitBlockNumber(l.mr.BlockNumberGauge, receipt.BlockNumber)
 	}
 
 	// The transaction was successfully submitted

op-service/metrics/proposer.go

@@ -20,6 +20,6 @@ func InitProposerMetricsRegistry(r *prometheus.Registry, ns string) *ProposerMet
 
 	return &ProposerMetricsRegistry{BlockNumberGauge: blockNumberGauge}
 }
-func EmitBlockNumber(gauge prometheus.Gauge, ns string, blockNumber *big.Int) {
+func EmitBlockNumber(gauge prometheus.Gauge, blockNumber *big.Int) {
 	gauge.Set(float64(blockNumber.Uint64()))
 }