refactor: remove all unused imports (#9951)

Co-authored-by: tamaina <tamaina@hotmail.co.jp>

packages/backend/src/server/api/stream/channels/local-timeline.ts

@@ -1,5 +1,4 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { NotesRepository } from '@/models/index.js';
+import { Injectable } from '@nestjs/common';
 import { checkWordMute } from '@/misc/check-word-mute.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
 import type { Packed } from '@/misc/schema.js';