test: use T.TempDir to create temporary test directory

The directory created by `T.TempDir` is automatically removed when the
test and all its subtests complete.

Reference: https://pkg.go.dev/testing#T.TempDir
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>

internal/jobqueue/fsjobqueue/fsjobqueue_test.go

@@ -1,8 +1,6 @@
 package fsjobqueue_test
 
 import (
-	"io/ioutil"
-	"os"
 	"testing"
 
 	"github.com/stretchr/testify/require"
@@ -14,16 +12,12 @@ import (
 
 func TestJobQueueInterface(t *testing.T) {
 	jobqueuetest.TestJobQueue(t, func() (jobqueue.JobQueue, func(), error) {
-		dir, err := ioutil.TempDir("", "jobqueue-test-")
-		if err != nil {
-			return nil, nil, err
-		}
+		dir := t.TempDir()
 		q, err := fsjobqueue.New(dir)
 		if err != nil {
 			return nil, nil, err
 		}
 		stop := func() {
-			_ = os.RemoveAll(dir)
 		}
 		return q, stop, nil
 	})