chore: remove npm flow

.github/workflows/npm.yml

@@ -1,19 +0,0 @@
-name: npm
-
-on:
-  release:
-    types: [released]
-
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    steps:
-      - name: 📦 Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: "latest"
-
-      - name: 🚀 Publish
-        run: npm publish https://github.com/aiken-lang/aiken/releases/latest/download/aiken-npm-package.tar.gz --access public
-        env:
-          NPM_TOKEN: ${{secrets.NPM_TOKEN}}