Revert "fix(module): resolve #build/app.config import for vue and nuxt"

This reverts commit d6943e39c0.

src/runtime/types/app.config.d.ts

@@ -0,0 +1,6 @@
+declare module '#build/app.config' {
+  import type { AppConfig } from '@nuxt/schema'
+
+  const _default: AppConfig
+  export default _default
+}