Update configuration for chromedriver

Remove generated files

protected/humhub/modules/admin/tests/codeception/acceptance.suite.yml

@@ -10,13 +10,14 @@
 
 class_name: AcceptanceTester
 modules:
-    enabled:
-        - WebDriver
-        - tests\codeception\_support\WebHelper
-        - tests\codeception\_support\DynamicFixtureHelper
-    config:
-        WebDriver:
-            url: http://localhost:8080/
-            browser: firefox
-            window_size: 1024x768
-            lang: en
+  enabled:
+    - WebDriver:
+        url: 'http://localhost:8080/'
+        window_size: false # disabled in ChromeDriver
+        port: 9515
+        browser: chrome
+        capabilities:
+          chromeOptions:
+            args: ['--headless', '--disable-gpu', '--no-sandbox']
+    - tests\codeception\_support\WebHelper
+    - tests\codeception\_support\DynamicFixtureHelper