Remove another instance of SKIP_PREPACK

Author: Mrtenz

.github/workflows/publish-release.yml

@@ -50,13 +50,10 @@ jobs:
         with:
           name: publish-release-artifacts-${{ github.sha }}
       - name: Dry Run Publish
-        # omit npm-token token to perform dry run publish
         uses: MetaMask/action-npm-publish@v5
         with:
           slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL }}
           subteam: S042S7RE4AE # @metamask-npm-publishers
-        env:
-          SKIP_PREPACK: true
 
   publish-npm:
     name: Publish to NPM