Revert "feat: 個人宛てお知らせ機能 (#107)"

This reverts commit 7b1efd6b97.

packages/frontend/src/boot/main-boot.ts

@@ -7,7 +7,7 @@ import { computed, createApp, watch, markRaw, version as vueVersion, defineAsync
 import { common } from './common';
 import { version, ui, lang, updateLocale } from '@/config';
 import { i18n, updateI18n } from '@/i18n';
-import { confirm, alert, post, popup, toast, api } from '@/os';
+import { confirm, alert, post, popup, toast } from '@/os';
 import { useStream } from '@/stream';
 import * as sound from '@/scripts/sound';
 import { $i, refreshAccount, login, updateAccount, signout } from '@/account';
@@ -251,11 +251,6 @@ export async function mainBoot() {
 		main.on('myTokenRegenerated', () => {
 			signout();
 		});
-
-		const unreadUserAnnouncementsList = await api('announcements', { privateOnly: true, withUnreads: true });
-		if (unreadUserAnnouncementsList.length > 0) {
-			unreadUserAnnouncementsList.forEach((v) => popup(defineAsyncComponent(() => import('@/components/MkUserAnnouncementModal.vue')), { title: v.title, text: v.text, closeDuration: v.closeDuration, announcementId: v.id }, {}, 'closed'));
-		}
 	}
 
 	// shortcut