diff --git a/uio/linewriter.go b/uio/linewriter.go
deleted file mode 100644
index a78835b..0000000
--- a/uio/linewriter.go
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright 2019 the u-root 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 uio
-
-import (
-	"bytes"
-	"io"
-)
-
-// LineWriter processes one line of log output at a time.
-type LineWriter interface {
-	// OneLine is always called with exactly one line of output.
-	OneLine(b []byte)
-}
-
-// FullLineWriter returns an io.Writer that waits for a full line of prints
-// before calling w.Write on one line each.
-func FullLineWriter(w LineWriter) io.WriteCloser {
-	return &fullLineWriter{w: w}
-}
-
-type fullLineWriter struct {
-	w      LineWriter
-	buffer []byte
-}
-
-func (fsw *fullLineWriter) printBuf() {
-	bufs := bytes.Split(fsw.buffer, []byte{'\n'})
-	for _, buf := range bufs {
-		if len(buf) != 0 {
-			fsw.w.OneLine(buf)
-		}
-	}
-	fsw.buffer = nil
-}
-
-// Write implements io.Writer and buffers p until at least one full line is
-// received.
-func (fsw *fullLineWriter) Write(p []byte) (int, error) {
-	i := bytes.LastIndexByte(p, '\n')
-	if i == -1 {
-		fsw.buffer = append(fsw.buffer, p...)
-	} else {
-		fsw.buffer = append(fsw.buffer, p[:i]...)
-		fsw.printBuf()
-		fsw.buffer = append([]byte{}, p[i:]...)
-	}
-	return len(p), nil
-}
-
-// Close implements io.Closer and flushes the buffer.
-func (fsw *fullLineWriter) Close() error {
-	fsw.printBuf()
-	return nil
-}
diff --git a/uio/multiwriter.go b/uio/multiwriter.go
deleted file mode 100644
index e05bc1b..0000000
--- a/uio/multiwriter.go
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright 2019 the u-root 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 uio
-
-import (
-	"io"
-)
-
-type multiCloser struct {
-	io.Writer
-	writers []io.Writer
-}
-
-// Close implements io.Closer and closes any io.Writers that are also
-// io.Closers.
-func (mc *multiCloser) Close() error {
-	var allErr error
-	for _, w := range mc.writers {
-		if c, ok := w.(io.Closer); ok {
-			if err := c.Close(); err != nil {
-				allErr = err
-			}
-		}
-	}
-	return allErr
-}
-
-// MultiWriteCloser is an io.MultiWriter that has an io.Closer and attempts to
-// close those w's that have optional io.Closers.
-func MultiWriteCloser(w ...io.Writer) io.WriteCloser {
-	return &multiCloser{
-		Writer:  io.MultiWriter(w...),
-		writers: w,
-	}
-}
diff --git a/uio/uiotest/uiotest.go b/uio/uiotest/uiotest.go
deleted file mode 100644
index f5ae728..0000000
--- a/uio/uiotest/uiotest.go
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright 2020 the u-root 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 uiotest contains tests for uio functions.
-package uiotest
-
-import (
-	"io"
-	"testing"
-	"time"
-
-	"github.com/u-root/uio/uio"
-)
-
-// NowLog returns the current time formatted like the standard log package's
-// timestamp.
-func NowLog() string {
-	return time.Now().Format("2006/01/02 15:04:05")
-}
-
-// TestLineWriter is an io.Writer that logs full lines of serial to tb.
-func TestLineWriter(tb testing.TB, prefix string) io.WriteCloser {
-	tb.Helper()
-	if len(prefix) > 0 {
-		return uio.FullLineWriter(&testLinePrefixWriter{tb: tb, prefix: prefix})
-	}
-	return uio.FullLineWriter(&testLineWriter{tb: tb})
-}
-
-// testLinePrefixWriter is an io.Writer that logs full lines of serial to tb.
-type testLinePrefixWriter struct {
-	tb     testing.TB
-	prefix string
-}
-
-// OneLine implements a uio.LineWriter.
-func (tsw *testLinePrefixWriter) OneLine(p []byte) {
-	tsw.tb.Logf("%s %s: %s", NowLog(), tsw.prefix, p)
-}
-
-// testLineWriter is an io.Writer that logs full lines of serial to tb.
-type testLineWriter struct {
-	tb testing.TB
-}
-
-// OneLine implements a uio.LineWriter.
-func (tsw *testLineWriter) OneLine(p []byte) {
-	tsw.tb.Logf("%s: %s", NowLog(), p)
-}