sync: remove unused const

Change-Id: I4382b5317cf7f39a48005516ff6d437883c6fd07
Reviewed-on: https://go-review.googlesource.com/c/go/+/456495
Reviewed-by: Dominik Honnef <dominik@honnef.co>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Changkun Ou <mail@changkun.de>

diff --git a/src/sync/map_bench_test.go b/src/sync/map_bench_test.go
index 4815f57349ec179d7e54c668937014f340bd2b0a..eebec3bacfccc27ac05a15dee3509d127044a84e 100644 (file)
--- a/src/sync/map_bench_test.go
+++ b/src/sync/map_bench_test.go
@@ -389,7 +389,6 @@ func BenchmarkCompareAndSwapNoExistingKey(b *testing.B) {
 }
 
 func BenchmarkCompareAndSwapValueNotEqual(b *testing.B) {
-       const n = 1 << 10
        benchMap(b, bench{
                setup: func(_ *testing.B, m mapInterface) {
                        m.Store(0, 0)