fix: remove local-only deno-vite-plugin link that breaks CI

The `links` field referenced a sibling directory that only exists on the
author's machine, causing `deno install` to fail in CI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bartlomieju

deno.json

@@ -1,7 +1,6 @@
 {
   "vendor": true,
   "nodeModulesDir": "manual",
-  "links": ["../deno-vite-plugin"],
   "workspace": [
     "./packages/*",
     "./www"