metrics: linter nitpicks

metrics/gauge_info_test.go

@@ -23,7 +23,6 @@ func TestGaugeInfoJsonString(t *testing.T) {
 	if have, want := g.Snapshot().Value().String(), `{"value":"updated"}`; have != want {
 		t.Errorf("\nhave: %v\nwant: %v\n", have, want)
 	}
-
 }
 
 func TestGetOrRegisterGaugeInfo(t *testing.T) {

metrics/sample_test.go

@@ -31,7 +31,6 @@ func BenchmarkCompute1000000(b *testing.B) {
 	for i := 0; i < len(s); i++ {
 		s[i] = int64(i)
 		sum += int64(i)
-
 	}
 	mean := float64(sum) / float64(len(s))
 	b.ResetTimer()