Remove PHPUnit 9 code (#1090)

Author: driesvints

.gitattributes

@@ -15,6 +15,5 @@
 CHANGELOG.md export-ignore
 phpstan.neon.dist export-ignore
 phpunit.xml.dist export-ignore
-phpunit9.xml.dist export-ignore
 testbench.yaml export-ignore
 UPGRADE.md export-ignore

.github/workflows/browser-tests.yml

@@ -56,14 +56,7 @@ jobs:
       - name: Run Laravel Server
         run: php vendor/bin/testbench serve --no-reload &
 
-      - name: Execute tests
-        if: matrix.phpunit == '9'
-        run: php vendor/bin/phpunit --no-coverage --no-configuration --dont-report-useless-tests --bootstrap vendor/autoload.php --color tests/Browser
-        env:
-          APP_URL: http://127.0.0.1:8000
-
       - name: Execute tests
         run: php vendor/bin/phpunit -c phpunit.dusk.xml.dist
-        if: matrix.phpunit != '9'
         env:
           APP_URL: http://127.0.0.1:8000

.github/workflows/tests.yml

@@ -48,11 +48,6 @@ jobs:
            composer update --prefer-dist --no-interaction --no-progress
 
       - name: Execute tests
-        if: matrix.phpunit == '9'
-        run: vendor/bin/phpunit -c phpunit9.xml.dist --verbose
-
-      - name: Execute tests
-        if: matrix.phpunit != '9'
         run: vendor/bin/phpunit -c phpunit.xml.dist
 
   stub-tests: