delete(); delete_option('wpAdvQuiz_dbVersion'); delete_option('wpAdvQuiz_version'); delete_option('wpAdvQuiz_addRawShortcode'); delete_option('wpAdvQuiz_jsLoadInHead'); delete_option('wpAdvQuiz_touchLibraryDeactivate'); delete_option('wpAdvQuiz_corsActivated'); delete_option('wpAdvQuiz_toplistDataFormat'); delete_option('wpAdvQuiz_emailSettings'); delete_option('wpAdvQuiz_statisticTimeFormat');