Drop support for ember-concurrency@v2 (ember-concurrency is on @v4 now anyway) (#500)

* Drop support for ember-concurrency@v2 (ember-concurrency is on @v4 now anyway)

* Drop more things

* These were not supposed to exist

Author: NullVoxPopuli

.github/workflows/ci-build.yml

@@ -86,10 +86,6 @@ jobs:
         run: 'pnpm add --save-dev ${{ matrix.typescript-scenario}}'
         working-directory: ./test-apps/base-tests/
 
-      - name: 'Change ember-concurrency TS to ${{ matrix.typescript-scenario }}'
-        run: 'pnpm add --save-dev ${{ matrix.typescript-scenario}}'
-        working-directory: ./test-apps/ember-concurrency-v2
-
       - name: 'Change ember-fetch TS to ${{ matrix.typescript-scenario }}'
         run: 'pnpm add --save-dev ${{ matrix.typescript-scenario}}'
         working-directory: ./test-apps/ember-fetch-v8
@@ -110,7 +106,6 @@ jobs:
       matrix:
         app: 
           - test-apps/base-tests
-          - test-apps/ember-concurrency-v2
         ember-try-scenario:
           - ember-lts-3.16
           - ember-lts-3.20

addon/addon/wait-for.ts

@@ -48,32 +48,6 @@ type DecoratorArguments = [object, string, PropertyDescriptor, string?];
  *   }
  * }
  *
- * @example
- *
- * import Component from '@ember/component';
- * import { task } from 'ember-concurrency';
- * import { waitFor } from '@ember/test-waiters';
- *
- * export default Component.extend({
- *   doTaskStuff: task(waitFor(function* doTaskStuff() {
- *     yield somethingAsync();
- *   }
- * });
- *
- * @example
- *
- * import Component from '@ember/component';
- * import { task } from 'ember-concurrency-decorators';
- * import { waitFor } from '@ember/test-waiters';
- *
- * export default class Friendz extends Component {
- *   @task
- *   @waitFor
- *   *doTaskStuff() {
- *     yield somethingAsync();
- *   }
- * }
- *
  */
 export default function waitFor<A extends Array<any>, PromiseReturn>(
   fn: AsyncFunction<A, PromiseReturn>,

addon/package.json

@@ -53,8 +53,6 @@
     "ember-cli-htmlbars": "^6.3.0",
     "ember-cli-inject-live-reload": "^2.1.0",
     "ember-cli-uglify": "^3.0.0",
-    "ember-concurrency-decorators": "^2.0.3",
-    "ember-concurrency-ts": "^0.3.1",
     "ember-decorators-polyfill": "^1.1.5",
     "ember-disable-prototype-extensions": "^1.1.3",
     "ember-load-initializers": "^2.1.2",