Remove more error expectations

Author: backspace

packages/host/app/components/ai-assistant/panel.gts

@@ -5,7 +5,6 @@ import type Owner from '@ember/owner';
 import RouterService from '@ember/routing/router-service';
 import { service } from '@ember/service';
 import Component from '@glimmer/component';
-//@ts-expect-error the types don't recognize the cached export
 import { tracked, cached } from '@glimmer/tracking';
 
 import { restartableTask, timeout } from 'ember-concurrency';

packages/host/app/components/operator-mode/stack-item.gts

@@ -8,7 +8,6 @@ import { service } from '@ember/service';
 import { htmlSafe, SafeString } from '@ember/template';
 import Component from '@glimmer/component';
 
-//@ts-expect-error cached type not available yet
 import { tracked, cached } from '@glimmer/tracking';
 
 import { formatDistanceToNow } from 'date-fns';