removed unnecessary code

extension/ui/bg/ui-button.js

@@ -112,7 +112,6 @@ singlefile.extension.ui.bg.button = (() => {
 	return {
 		onMessage,
 		onInitialize,
-		onProgress,
 		onForbiddenDomain,
 		onError,
 		onEnd,

extension/ui/bg/ui-main.js

@@ -42,9 +42,6 @@ singlefile.extension.ui.bg.main = (() => {
 		onInitialize(tabId, step, autoSave) {
 			singlefile.extension.ui.bg.button.onInitialize(tabId, step, autoSave);
 		},
-		onProgress(tabId, index, maxIndex) {
-			singlefile.extension.ui.bg.button.onProgress(tabId, index, maxIndex);
-		},
 		onError(tabId) {
 			singlefile.extension.ui.bg.button.onError(tabId);
 		},