refactor: ComponentStore ベースの ArticleStore を 削除

src/app/features/blog/containers/articles/article.store.ts

@@ -1,22 +1,6 @@
-import { Injectable } from '@angular/core';
-import { ComponentStore } from '@ngrx/component-store';
 import { patchState, signalStore, withMethods, withState } from '@ngrx/signals';
-import { Observable } from 'rxjs';
 import { Article, Feed } from '../../domain/feed';
 
-@Injectable()
-export class DeprecatedArticleStore extends ComponentStore<Feed> {
-  constructor() {
-    super({ items: [] });
-  }
-
-  readonly blogItems$: Observable<Article[]> = this.select((state) => state.items);
-
-  readonly setFeed = this.updater((_, feed: Feed) => {
-    return { items: feed.items };
-  });
-}
-
 type ArticleState = {
   items: Article[];
 };