Remove superfluous id to css class mapping

web/typo3conf/ext/ep_events/Classes/ViewHelpers/SectionCssClassViewHelper.php

@@ -40,13 +40,9 @@ class SectionCssClassViewHelper extends AbstractViewHelper
      */
     protected static $cssClasses = [
         1 => 'incentives',
-        14 => 'incentives',
         2 => 'teambuilding',
-        18 => 'teambuilding',
         3 => 'meetings',
-        16 => 'meetings',
         4 => 'events',
-        11 => 'events',
     ];
 
     public function initializeArguments()

web/typo3conf/ext/ep_events/Classes/ViewHelpers/SectionIconViewHelper.php

@@ -40,13 +40,9 @@ class SectionIconViewHelper extends AbstractViewHelper
      */
     protected static $icons = [
         1 => 'icon_incentives',
-        14 => 'icon_incentives',
         2 => 'icon_teambuilding',
-        18 => 'icon_teambuilding',
         3 => 'icon_meetings',
-        16 => 'icon_meetings',
         4 => 'icon_events',
-        11 => 'icon_events',
     ];
 
     public function initializeArguments()