[ci] Stop running CUDA tests at CI (#4611)

.github/workflows/cuda.yml

-name: CUDA Version
-
-on:
-  push:
-    branches:
-    - master
-  pull_request:
-    branches:
-    - master
-
-env:
-  github_actions: 'true'
-  os_name: linux
-  task: cuda
-  conda_env: test-env
-
-jobs:
-  test:
-    name: cuda ${{ matrix.cuda_version }} ${{ matrix.method }} (linux, ${{ matrix.compiler }}, Python ${{ matrix.python_version }})
-    runs-on: [self-hosted, linux]
-    timeout-minutes: 60
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - method: source
-            compiler: gcc
-            python_version: 3.7
-            cuda_version: "11.4.0"
-          - method: pip
-            compiler: clang
-            python_version: 3.8
-            cuda_version: "10.0"
-          - method: wheel
-            compiler: gcc
-            python_version: 3.9
-            cuda_version: "9.0"
-    steps:
-      - name: Setup or update software on host machine
-        run: |
-            sudo apt-get update
-            sudo apt-get install --no-install-recommends -y \
-                apt-transport-https \
-                ca-certificates \
-                curl \
-                git \
-                gnupg-agent \
-                software-properties-common
-            curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
-            sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" -y
-            curl -sL https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add -
-            curl -sL https://nvidia.github.io/nvidia-docker/$(. /etc/os-release;echo $ID$VERSION_ID)/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list
-            sudo apt-get update
-            sudo apt-get install --no-install-recommends -y \
-                containerd.io \
-                docker-ce \
-                docker-ce-cli \
-                nvidia-docker2
-            sudo chmod a+rw /var/run/docker.sock
-            sudo systemctl restart docker
-      - name: Remove old folder with repository
-        run: sudo rm -rf $GITHUB_WORKSPACE
-      - name: Checkout repository
-        uses: actions/checkout@v1
-        with:
-          fetch-depth: 5
-          submodules: true
-      - name: Setup and run tests
-        run: |
-            export ROOT_DOCKER_FOLDER=/LightGBM
-            cat > docker.env <<EOF
-            GITHUB_ACTIONS=${{ env.github_actions }}
-            OS_NAME=${{ env.os_name }}
-            COMPILER=${{ matrix.compiler }}
-            TASK=${{ env.task }}
-            METHOD=${{ matrix.method }}
-            CONDA_ENV=${{ env.conda_env }}
-            PYTHON_VERSION=${{ matrix.python_version }}
-            BUILD_DIRECTORY=$ROOT_DOCKER_FOLDER
-            LGB_VER=$(head -n 1 VERSION.txt)
-            EOF
-            cat > docker-script.sh <<EOF
-            export CONDA=\$HOME/miniconda
-            export PATH=\$CONDA/bin:\$PATH
-            nvidia-smi
-            $ROOT_DOCKER_FOLDER/.ci/setup.sh || exit -1
-            $ROOT_DOCKER_FOLDER/.ci/test.sh || exit -1
-            EOF
-            docker run --env-file docker.env -v "$GITHUB_WORKSPACE":"$ROOT_DOCKER_FOLDER" --rm --gpus all "nvcr.io/nvidia/cuda:${{ matrix.cuda_version }}-devel" /bin/bash $ROOT_DOCKER_FOLDER/docker-script.sh
-  all-successful:
-    # https://github.community/t/is-it-possible-to-require-all-github-actions-tasks-to-pass-without-enumerating-them/117957/4?u=graingert
-    runs-on: ubuntu-latest
-    needs: [test]
-    steps:
-    - name: Note that all tests succeeded
-      run: echo "🎉"