Rationalize os specific build constraints

terminal_appengine.go

@@ -1,13 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2018 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 appengine
-
-package logrus
-
-import "io"
-
-func initTerminal(w io.Writer) {
-}

terminal_bsd.go

@@ -1,17 +0,0 @@
-// +build darwin freebsd openbsd netbsd dragonfly
-// +build !appengine,!js
-
-package logrus
-
-import (
-	"io"
-
-	"golang.org/x/sys/unix"
-)
-
-const ioctlReadTermios = unix.TIOCGETA
-
-type Termios unix.Termios
-
-func initTerminal(w io.Writer) {
-}

terminal_linux.go

@@ -1,21 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2013 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 !appengine,!js
-
-package logrus
-
-import (
-	"io"
-
-	"golang.org/x/sys/unix"
-)
-
-const ioctlReadTermios = unix.TCGETS
-
-type Termios unix.Termios
-
-func initTerminal(w io.Writer) {
-}

terminal_notwindows.go

@@ -0,0 +1,8 @@
+// +build !windows
+
+package logrus
+
+import "io"
+
+func initTerminal(w io.Writer) {
+}