use in instead string join (#155)

models/admin.go

 	"github.com/Unknwon/com"
 	"github.com/go-xorm/xorm"
 
-	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 )
 		return nil
 	}
 	_, err := x.
-		Where("id IN (" + strings.Join(base.Int64sToStrings(ids), ",") + ")").
+		In("id", ids).
 		Delete(new(Notice))
 	return err
 }

models/issue.go

 			return make([]*Issue, 0), nil
 		}
 		sess.
-			In("issue.repo_id", base.Int64sToStrings(opts.RepoIDs)).
+			In("issue.repo_id", opts.RepoIDs).
 			And("issue.is_closed=?", opts.IsClosed)
 	} else {
 		sess.Where("issue.is_closed=?", opts.IsClosed)

models/issue_label.go

 	"github.com/go-xorm/xorm"
 
 	api "code.gitea.io/sdk/gitea"
-
-	"code.gitea.io/gitea/modules/base"
 )
 
 var labelColorPattern = regexp.MustCompile("#([a-fA-F0-9]{6})")
 	labels := make([]*Label, 0, len(labelIDs))
 	return labels, x.
 		Where("repo_id = ?", repoID).
-		In("id", base.Int64sToStrings(labelIDs)).
+		In("id", labelIDs).
 		Asc("name").
 		Find(&labels)
 }
 	labels := make([]*Label, 0, len(labelIDs))
 	return labels, e.
 		Where("id > 0").
-		In("id", base.Int64sToStrings(labelIDs)).
+		In("id", labelIDs).
 		Asc("name").
 		Find(&labels)
 }

models/ssh_key.go

 	"github.com/go-xorm/xorm"
 	"golang.org/x/crypto/ssh"
 
-	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/process"
 	"code.gitea.io/gitea/modules/setting"
 		return nil
 	}
 
-	_, err := e.In("id", strings.Join(base.Int64sToStrings(keyIDs), ",")).Delete(new(PublicKey))
+	_, err := e.In("id", keyIDs).Delete(new(PublicKey))
 	return err
 }