remove unused exports

extension/core/bg/business.js

@@ -49,17 +49,13 @@ let currentTaskId = 0, maxParallelWorkers;
 ui.setBusiness({ isSavingTab, saveTabs, saveUrls, cancelTab, openEditor, saveSelectedLinks });
 
 export {
-	isSavingTab,
 	saveTabs,
 	saveUrls,
-	saveSelectedLinks,
-	cancelTab,
 	cancelTask,
 	cancelAllTasks,
 	getTasksInfo,
 	getTaskInfo,
 	setCancelCallback,
-	openEditor,
 	onSaveEnd,
 	onInit,
 	cancelTab as onTabRemoved