fix(git): add vendor in .gitignore

vendor/golang.org/x/sys/unix/sysvshm_linux.go

@@ -1,21 +0,0 @@
-// Copyright 2021 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux
-// +build linux
-
-package unix
-
-import "runtime"
-
-// SysvShmCtl performs control operations on the shared memory segment
-// specified by id.
-func SysvShmCtl(id, cmd int, desc *SysvShmDesc) (result int, err error) {
-	if runtime.GOARCH == "arm" ||
-		runtime.GOARCH == "mips64" || runtime.GOARCH == "mips64le" {
-		cmd |= ipc_64
-	}
-
-	return shmctl(id, cmd, desc)
-}