[Bug] deprecate export gone from @ember/application/deprecations

[mydea]

🐞 Describe the Bug

In current canary, this does not work anymore:

import { deprecate } from '@ember/application/deprecations`

This is not documented anywhere as far as I've seen, but ember-test-helpers uses it and it seemed to have worked so far.
I made a PR there to fix this, but I guess this should not be dropped before 4.0.0 then..?

See: emberjs/ember-test-helpers#1066

🔬 Minimal Reproduction

I noticed in an addon running canary tests, e.g. see here:
https://github.com/fabscale/ember-graphql-client/pull/1/checks?check_run_id=3102803118#step:6:53

😕 Actual Behavior

Import used to work (up to current beta) but stopped working.

🤔 Expected Behavior

Import should continue to work, at least until 4.0.0 I guess?

🌍 Environment

• Ember: Canary
• Node.js/npm: 14
• OS: Ubuntu
• Browser: Chrome (GH Actions)

[mydea]

Or do I misunderstand and deprecated features for 4.0 are already removed on canary? If so, then I guess this might lead to a lot of addon canary tests failing due to the removals, as many used addons might not have fully migrated yet?

[mydea]

OK, I see that this is actually affecting all the deprecation stuff. I guess I have to just ignore failing canary builds for now, then, as this will probably be a more widespread issue for addons running canary tests.