Simplify reflection-golden-test

Author: ondrejmirtes

.github/workflows/reflection-golden-test.yml

@@ -64,8 +64,6 @@ jobs:
       fail-fast: false
       matrix:
         php-version:
-          - "7.4"
-          - "8.0"
           - "8.1"
           - "8.2"
           - "8.3"
@@ -99,14 +97,6 @@ jobs:
       - name: "Install dependencies"
         run: "composer install --no-interaction --no-progress"
 
-      - name: "Transform source code"
-        if: matrix.php-version == '7.4' || matrix.php-version == '8.0'
-        run: |
-          composer install --no-interaction --no-progress --working-dir=compiler
-          ./compiler/vendor/bin/simple-downgrade downgrade -c build/downgrade.php ${{ matrix.php-version }}
-          composer dump
-
-
       - name: "Dump previous reflection data"
         run: "php tests/generate-reflection-test.php"
 
@@ -118,19 +108,8 @@ jobs:
       - name: "Checkout"
         uses: actions/checkout@v4
 
-      - name: "Downgrade PHPUnit"
-        if: matrix.php-version == '7.4' || matrix.php-version == '8.0'
-        run: "composer require --dev phpunit/phpunit:^9.6 sebastian/diff:^4.0 --update-with-dependencies --ignore-platform-reqs"
-
       - name: "Install dependencies"
         run: "composer install --no-interaction --no-progress"
 
-      - name: "Transform source code"
-        if: matrix.php-version == '7.4' || matrix.php-version == '8.0'
-        run: |
-          composer install --no-interaction --no-progress --working-dir=compiler
-          ./compiler/vendor/bin/simple-downgrade downgrade -c build/downgrade.php ${{ matrix.php-version }}
-          composer dump
-
       - name: "Reflection golden test"
         run: "make tests-golden-reflection || true"