Migrating from govendor to go dep

Change-Id: I08f2863450e141f1fed0bdef4b9ba64157c7289d
diff --git a/vendor/github.com/Sirupsen/logrus/terminal_notwindows.go b/vendor/github.com/Sirupsen/logrus/terminal_notwindows.go
index 329038f..3dbd237 100644
--- a/vendor/github.com/Sirupsen/logrus/terminal_notwindows.go
+++ b/vendor/github.com/Sirupsen/logrus/terminal_notwindows.go
@@ -1,22 +1,8 @@
-// Based on ssh/terminal:
-// Copyright 2011 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.
-
-// +build linux darwin freebsd openbsd netbsd dragonfly
-// +build !appengine
+// +build !windows
 
 package logrus
 
-import (
-	"syscall"
-	"unsafe"
-)
+import "io"
 
-// IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal() bool {
-	fd := syscall.Stderr
-	var termios Termios
-	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
-	return err == 0
+func initTerminal(w io.Writer) {
 }