unstable: remove Deno.spawn, Deno.spawnSync, Deno.spawnChild APIs (#16893)

This commit removes three unstable Deno APIs:
- "Deno.spawn()"
- "Deno.spawnSync()"
- "Deno.spawnChild()"

These APIs were replaced by a unified "Deno.Command" API.

1 files changed, 11 insertions, 0 deletions

diff --git a/cli/bench/command.js b/cli/bench/command.js
new file mode 100644
index 000000000..5b57dd4f6
--- /dev/null
+++ b/cli/bench/command.js
@@ -0,0 +1,11 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+Deno.bench("echo deno", async () => {
+  await new Deno.Command("echo", { args: ["deno"] }).output();
+});
+
+Deno.bench("cat 128kb", async () => {
+  await new Deno.Command("cat", {
+    args: ["./cli/bench/testdata/128k.bin"],
+  }).output();
+});