[1.22](backport #496) refactor: install-go.sh is not used

[mergify]

See https://github.com/elastic/golang-crossbuild/pull/436/files#r1734390717

---

This is an automatic backport of pull request #496 done by Mergify.

[mergify]

Cherry-pick of 6960c76 has failed:

On branch mergify/bp/1.22/pr-496
Your branch is up to date with 'origin/1.22'.

You are currently cherry-picking commit 6960c76.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by them: go/base/install-go.sh

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: c5f232b

cc @v1v

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: c5f232b

cc @v1v