chore: remove unused showRoutes import from index.ts

Author: luxass

Diff for: src/index.ts

@@ -2,7 +2,6 @@ import type { ApiError, HonoContext } from "./types";
 import { OpenAPIHono } from "@hono/zod-openapi";
 import { apiReference } from "@scalar/hono-api-reference";
 import { env } from "hono/adapter";
-import { showRoutes } from "hono/dev";
 import { HTTPException } from "hono/http-exception";
 import { buildOpenApiConfig } from "./openapi";
 import { GATEWAY_GITHUB_ROUTER } from "./routes/gateway_github";
@@ -104,6 +103,4 @@ app.notFound(async (c) => {
   } satisfies ApiError, 404);
 });
 
-showRoutes(app);
-
 export default app;