.github/workflows: remove update-flake-lock token

was only needed for bors

.github/workflows/flake-updates-nixpkgs-update.yml

@@ -16,7 +16,6 @@ jobs:
         id: update
         uses: DeterminateSystems/update-flake-lock@v20
         with:
-          token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
           inputs: nixpkgs-update
       - name: Enable Automerge
         run: gh pr merge --rebase --auto "${{ steps.update.outputs.pull-request-number }}"

.github/workflows/flake-updates.yml

@@ -17,8 +17,6 @@ jobs:
       - name: Update flake.lock
         id: update
         uses: DeterminateSystems/update-flake-lock@v20
-        with:
-          token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
       # disable temporarily, can be reenabled when hercules fork action is removed
       #- name: Enable Automerge
       #  run: gh pr merge --rebase --auto "${{ steps.update.outputs.pull-request-number }}"