Update tests.yml

Author: shadabahmed

.github/workflows/tests.yml

@@ -12,9 +12,6 @@ jobs:
          - ruby-version: 2.6.6
            bundler-version: 1.17.3
            rails-version: 4.2.11.3
-         - ruby-version: 2.7.2
-           bundler-version: default
-           rails-version: 5.2.4.4
 
     steps:
     - uses: actions/checkout@v2