move out git module and #1573 send push hook

modules/git/error.go

@@ -1,22 +0,0 @@
-// Copyright 2015 The Gogs Authors. All rights reserved.
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file.
-
-package git
-
-import (
-	"fmt"
-)
-
-type ErrUnsupportedVersion struct {
-	Required string
-}
-
-func IsErrUnsupportedVersion(err error) bool {
-	_, ok := err.(ErrUnsupportedVersion)
-	return ok
-}
-
-func (err ErrUnsupportedVersion) Error() string {
-	return fmt.Sprintf("Operation requires higher version [required: %s]", err.Required)
-}