Deprecate abort feature (backport #2337)

[mergify]

closes #2243

Unfortunately there is no native way to cause a compiler warning, so this is a bit of a hack.

---

This is an automatic backport of pull request #2337 done by Mergify.

[mergify]

Cherry-pick of 7c4e518 has failed:

On branch mergify/bp/release/2.2/pr-2337
Your branch is up to date with 'origin/release/2.2'.

You are currently cherry-picking commit 7c4e518a.
  (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)

Changes to be committed:
	modified:   devtools/check_workspace.sh
	modified:   docs/USING_COSMWASM_STD.md
	modified:   packages/std/Cargo.toml
	modified:   packages/std/src/exports.rs
	modified:   packages/std/src/imports.rs
	modified:   packages/std/src/lib.rs
	modified:   packages/std/src/panic.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   README.md

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