chore(ci): remove keep files to ensure old pages are being cleaned up

 now that previews are in a separate repo we can clear out old files always. 
Also remove unneeded user name and email.

Author: MSevey

.github/workflows/deploy.yml

@@ -46,12 +46,4 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./.vitepress/dist
-          keep_files: ${{ github.event_name != 'workflow_dispatch' }}
-          # The following lines assign commit authorship to the official
-          # GH-Actions bot for deploys to `gh-pages` branch:
-          # https://github.com/actions/checkout/issues/13#issuecomment-724415212
-          # The GH actions bot is used by default if you didn't specify the two fields.
-          # You can swap them out with your own user credentials.
           cname: rollkit.dev
-          user_name: YazzyYaz
-          user_email: yaz@celestia.org