Remove no-need option: .ruby-version is set by default

https://github.com/ruby/setup-ruby#usage

Author: yasulab

.github/workflows/daily.yml

@@ -17,7 +17,6 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: .ruby-version
           bundler-cache: true
 
       - name: Install dependencies