cmd/internal/bio: remove unused MustWriter

Change-Id: I70435781fbaeca2b6927a74afd79a3ff123b527b
GitHub-Last-Rev: cae569f4c4bf73a9a6cd8d26fb080962f94bf1b1
GitHub-Pull-Request: golang/go#71622
Reviewed-on: https://go-review.googlesource.com/c/go/+/647916
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Jorropo <jorropo.pgm@gmail.com>

diff --git a/src/cmd/internal/bio/must.go b/src/cmd/internal/bio/must.go
deleted file mode 100644 (file)
index 3604b29..0000000
--- a/src/cmd/internal/bio/must.go
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright 2016 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.
-
-package bio
-
-import (
-       "io"
-       "log"
-)
-
-// MustClose closes Closer c and calls log.Fatal if it returns a non-nil error.
-func MustClose(c io.Closer) {
-       if err := c.Close(); err != nil {
-               log.Fatal(err)
-       }
-}
-
-// MustWriter returns a Writer that wraps the provided Writer,
-// except that it calls log.Fatal instead of returning a non-nil error.
-func MustWriter(w io.Writer) io.Writer {
-       return mustWriter{w}
-}
-
-type mustWriter struct {
-       w io.Writer
-}
-
-func (w mustWriter) Write(b []byte) (int, error) {
-       n, err := w.w.Write(b)
-       if err != nil {
-               log.Fatal(err)
-       }
-       return n, nil
-}
-
-func (w mustWriter) WriteString(s string) (int, error) {
-       n, err := io.WriteString(w.w, s)
-       if err != nil {
-               log.Fatal(err)
-       }
-       return n, nil
-}