chore: optimize imports

src/onebot/action/file/GetFile.ts

@@ -2,7 +2,7 @@ import BaseAction from '../BaseAction';
 import fs from 'fs/promises';
 import { UUIDConverter } from '@/common/helper';
 import { ActionName } from '../types';
-import { ChatType, ElementType, FileElement, Peer, RawMessage, VideoElement } from '@/core/entities';
+import { ChatType, ElementType, Peer, RawMessage } from '@/core/entities';
 import { FromSchema, JSONSchema } from 'json-schema-to-ts';
 
 export interface GetFilePayload {

src/onebot/action/go-cqhttp/SetGroupPortrait.ts

@@ -53,6 +53,5 @@ export default class SetGroupPortrait extends BaseAction<Payload, any> {
             }
             throw `头像${payload.file}设置失败,无法获取头像,文件可能不存在`;
         }
-        return null;
     }
 }

src/onebot/action/msg/DeleteMsg.ts

@@ -2,7 +2,6 @@ import { ActionName } from '../types';
 import BaseAction from '../BaseAction';
 import { FromSchema, JSONSchema } from 'json-schema-to-ts';
 import { MessageUnique } from '@/common/message-unique';
-import { NodeIKernelMsgListener } from '@/core';
 
 const SchemaData = {
     type: 'object',