use slices package and remove some helpers (#17342)

cmd/utils.go

@@ -32,7 +32,6 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"reflect"
 	"runtime"
 	"runtime/pprof"
 	"runtime/trace"
@@ -278,18 +277,6 @@ func isMaxPartID(partID int) bool {
 	return partID > globalMaxPartID
 }
 
-func contains(slice interface{}, elem interface{}) bool {
-	v := reflect.ValueOf(slice)
-	if v.Kind() == reflect.Slice {
-		for i := 0; i < v.Len(); i++ {
-			if v.Index(i).Interface() == elem {
-				return true
-			}
-		}
-	}
-	return false
-}
-
 // profilerWrapper is created becauses pkg/profiler doesn't
 // provide any API to calculate the profiler file path in the
 // disk since the name of this latter is randomly generated.