chore: enable more linter (#1557)

pkg/perflib/perflib_test.go

@@ -1,39 +1,9 @@
 package perflib
 
 import (
-	"fmt"
 	"testing"
 )
 
-func ExampleQueryPerformanceData() {
-	objects, err := QueryPerformanceData("2")
-
-	if err != nil {
-		panic(err)
-	}
-
-	for _, object := range objects {
-		fmt.Printf("%d %s [%d counters, %d instances]\n",
-			object.NameIndex, object.Name, len(object.CounterDefs), len(object.Instances))
-
-		for _, instance := range object.Instances {
-			if !((instance.Name == "_Total") || (instance.Name == "")) {
-				continue
-			}
-
-			if instance.Name == "" {
-				fmt.Println("No instance.", instance.Name)
-			} else {
-				fmt.Println("Instance:", instance.Name)
-			}
-
-			for _, counter := range instance.Counters {
-				fmt.Printf("  -> %s %d\n", counter.Def.Name, counter.Def.NameIndex)
-			}
-		}
-	}
-}
-
 func BenchmarkQueryPerformanceData(b *testing.B) {
 	for n := 0; n < b.N; n++ {
 		_, _ = QueryPerformanceData("Global")