[TASK] removed deprecated call to compat_version

Classes/Service/ConfigurationService.php

@@ -127,17 +127,11 @@ class ConfigurationService extends AbstractService {
 			unset($this->extConfig['viewLanguages']);
 
 			$availableLanguageKeys = [];
-			if (GeneralUtility::compat_version('6.0')) {
-				/** @var Locales $locales */
-				$locales = GeneralUtility::makeInstance('TYPO3\CMS\Core\Localization\Locales');
-				$availableLanguageKeys = $locales->getLanguages();
-			} else {
-				$languages = explode(
-					'|', TYPO3_languages
-				);
-				foreach ($languages as $language) {
-					$availableLanguageKeys[$language] = TRUE;
-				}
+			$languages = explode(
+				'|', TYPO3_languages
+			);
+			foreach ($languages as $language) {
+				$availableLanguageKeys[$language] = TRUE;
 			}
 
 			foreach ($langs as $lang) {