Remove legacy driver CI step and unused phpunit-config parameter

Remove the "Run PHPUnit tests for the legacy driver" step that
ran root-level phpunit.xml.dist (now deleted). Also remove the
unused phpunit-config input parameter and PHPUNIT_CONFIG env var
that were only needed to switch between driver configs.

Author: JanJakes

.github/workflows/phpunit-tests-run.yml

@@ -12,19 +12,13 @@ on:
         description: 'The version of PHP to use, in the format of X.Y'
         required: true
         type: 'string'
-      phpunit-config:
-        description: 'The PHPUnit configuration file to use'
-        required: false
-        type: 'string'
-        default: 'phpunit.xml.dist'
       sqlite:
         description: 'SQLite version to install (e.g., 3.24.0). Leave empty for latest version.'
         required: false
         type: 'string'
         default: 'latest'
 env:
   LOCAL_PHP: ${{ inputs.php }}-fpm
-  PHPUNIT_CONFIG: ${{ inputs.phpunit-config }}
 
 jobs:
   phpunit-tests:
@@ -88,6 +82,3 @@ jobs:
       - name: Run PHPUnit tests
         run: php ./vendor/bin/phpunit -c ./phpunit.xml.dist
         working-directory: packages/mysql-on-sqlite
-
-      - name: Run PHPUnit tests for the legacy driver
-        run: php ./vendor/bin/phpunit -c ./phpunit.xml.dist

.github/workflows/phpunit-tests.yml

@@ -43,4 +43,3 @@ jobs:
       os: ${{ matrix.os }}
       php: ${{ matrix.php }}
       sqlite: ${{ matrix.sqlite || 'latest' }}
-      phpunit-config: ${{ 'phpunit.xml.dist' }}