Revert "fix: 非ログイン状態でお知らせの読み込みができない問題の修正 (#131)"

This reverts commit 233d967b82.

packages/backend/src/server/api/endpoints/announcements.ts

@@ -99,10 +99,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 					query.orWhere('announcement."userId" = :userId', { userId: me.id });
 				}
 			} else {
-				query.select([
-					'announcement.*',
-					'FALSE as "isRead"',
-				]);
 				query.where('announcement."userId" IS NULL');
 			}