diff --git a/cli/bench/async_ops.js b/cli/bench/async_ops.js
deleted file mode 100644
index 5a21af5c82..0000000000
--- a/cli/bench/async_ops.js
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-const queueMicrotask = globalThis.queueMicrotask || process.nextTick;
-let [total, count] = typeof Deno !== "undefined"
-  ? Deno.args
-  : [process.argv[2], process.argv[3]];
-
-total = total ? parseInt(total, 0) : 50;
-count = count ? parseInt(count, 10) : 1000000;
-
-async function bench(fun) {
-  const start = Date.now();
-  for (let i = 0; i < count; i++) await fun();
-  const elapsed = Date.now() - start;
-  const rate = Math.floor(count / (elapsed / 1000));
-  console.log(`time ${elapsed} ms rate ${rate}`);
-  if (--total) queueMicrotask(() => bench(fun));
-}
-
-const core = Deno[Deno.internal].core;
-const ops = core.ops;
-const opVoidAsync = ops.op_void_async;
-bench(() => opVoidAsync());
diff --git a/cli/tests/unit/ops_test.ts b/cli/tests/unit/ops_test.ts
index e91c37e67c..1b7377dc5a 100644
--- a/cli/tests/unit/ops_test.ts
+++ b/cli/tests/unit/ops_test.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
-const EXPECTED_OP_COUNT = 50;
+const EXPECTED_OP_COUNT = 49;
 
 Deno.test(function checkExposedOps() {
   // @ts-ignore TS doesn't allow to index with symbol
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index afd3be03b9..f956db67ca 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -623,9 +623,6 @@ const NOT_IMPORTED_OPS = [
   // anymore if ops are not user accessible.
   "op_spawn_child",
 
-  // TODO(bartlomieju): used in one of the benches, needs to be removed.
-  "op_void_async",
-
   // TODO(bartlomieju): can be removed after the `deno_core` upgrade.
   "op_encode_binary_string",
   "op_format_file_name",