rm workflow to update nvim plugins

.github/workflows/lazy-update.yml

@@ -1,26 +0,0 @@
-name: "update lazy plugins"
-on:
-  repository_dispatch:
-  workflow_dispatch:
-  schedule:
-    - cron: "0 3 * * *"
-permissions:
-  pull-requests: write
-  contents: write
-jobs:
-  update-lazy-plugins:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - uses: cachix/install-nix-action@v30
-      - name: Update vim plugins
-        run: |
-          export XDG_CONFIG_HOME=$PWD/home
-          nix run nixpkgs#neovim -- --headless "+Lazy! update" +qa
-      - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7
-        with:
-          title: update lazy plugins
-          commit-message: update neovim plugins