fix: remove unused package in redis integration testcase (#672)

Author: x1nchen

v2/integration-tests/redis_redis_test.go

@@ -1,17 +1,13 @@
 package integration_test
 
 import (
-	"errors"
-	"fmt"
 	"os"
 	"testing"
-	"time"
 
 	"github.com/RichardKnop/machinery/v2"
-	"github.com/RichardKnop/machinery/v2/config"
-
 	redisbackend "github.com/RichardKnop/machinery/v2/backends/redis"
 	redisbroker "github.com/RichardKnop/machinery/v2/brokers/redis"
+	"github.com/RichardKnop/machinery/v2/config"
 	eagerlock "github.com/RichardKnop/machinery/v2/locks/eager"
 )
 
@@ -46,4 +42,4 @@ func TestRedisRedis_GoRedis(t *testing.T) {
 	defer worker.Quit()
 	go worker.Launch()
 	testAll(server, t)
-}
+}