internal/runtime/cgroup: remove duplicate readString definition

Both CL 723241 and CL 723581 added identical definitions.

Change-Id: I6a6a636c9e5f8c9080b9389ebf9d3f10305d79ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/725661
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>

diff --git a/src/internal/runtime/cgroup/line_reader_test.go b/src/internal/runtime/cgroup/line_reader_test.go
index 6095dd048192fe17402c0b01ffe8bb701bc58344..fb790b1e451687ee05f7f478ff1f53cee698e89a 100644 (file)
--- a/src/internal/runtime/cgroup/line_reader_test.go
+++ b/src/internal/runtime/cgroup/line_reader_test.go
@@ -6,7 +6,6 @@ package cgroup_test
 
 import (
        "internal/runtime/cgroup"
-       "io"
        "strings"
        "testing"
 )
@@ -122,18 +121,6 @@ var readerTests = []struct {
        },
 }
 
-func readString(contents string) func(fd int, b []byte) (int, uintptr) {
-       r := strings.NewReader(contents)
-       return func(fd int, b []byte) (int, uintptr) {
-               n, err := r.Read(b)
-               if err != nil && err != io.EOF {
-                       const dummyErrno = 42
-                       return n, dummyErrno
-               }
-               return n, 0
-       }
-}
-
 func TestLineReader(t *testing.T) {
        for _, tc := range readerTests {
                t.Run(tc.name, func(t *testing.T) {