Delete unnecessary comment

Author: noraworld

action.yml

@@ -35,7 +35,6 @@ runs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: "3.1"
-        # bundler-cache: true
 
     - name: Install RubyGems
       run: bundle install --gemfile=$GITHUB_ACTION_PATH/Gemfile