change: 删除多余依赖引用

backend/src/index.ts

@@ -1,9 +1,5 @@
-import { pathToFileURL } from "bun";
 import { Hono } from "hono";
-import { onlySSG } from "hono/ssg";
 import { validator } from "hono/validator";
-import { isQuestionOrPlusOrMinusToken } from "typescript/unstable/ast";
-import { Signature } from "typescript/unstable/sync";
 
 const appTmp = new Hono()
 const app = appTmp.basePath("/watermark")