Revert the accidentally commits related GitHub Actions

.github/workflows/ubuntu-rvm.yml

@@ -1,34 +0,0 @@
-name: ubuntu-rvm
-
-on: [push]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        ruby: [ 'ruby-head', 'jruby-9.2.8.0' ]
-        test_tool: [ "rubygems", "bundler" ]
-    steps:
-    - uses: actions/checkout@master
-    - run: git submodule update -i
-    - name: Set up RVM
-      run: |
-        curl -sSL https://get.rvm.io | bash
-    - name: Set up Ruby
-      run: |
-        source $HOME/.rvm/scripts/rvm
-        rvm install ${{ matrix.ruby }} --binary
-        rvm --default use ${{ matrix.ruby }}
-    - name: Install dependencies
-      run: |
-        source $HOME/.rvm/scripts/rvm
-        util/ci.sh before_script
-      env:
-        TEST_TOOL: ${{ matrix.test_tool }}
-    - name: Run test
-      run: |
-        source $HOME/.rvm/scripts/rvm
-        util/ci.sh script
-      env:
-        TEST_TOOL: ${{ matrix.test_tool }}

.github/workflows/workflow.yml

@@ -1,21 +0,0 @@
-on: pull_request
-
-jobs:
-  macos:
-    runs-on: macos-latest
-    strategy:
-      matrix:
-        ruby: [ '2.3.x', '2.4.x', '2.5.x', '2.6.x' ]
-    steps:
-      - uses: actions/checkout@master
-      - name: Setup ruby
-        uses: actions/setup-ruby@v1
-        with:
-          version: ${{ matrix.ruby }}
-          architecture: 'x64'
-      - name: Install Dependencies
-        run: util/ci.sh before_script
-      - name: Run Test
-        run: util/ci.sh script
-        env:
-          TEST_TOOL: "rubygems"