removed obsolete code

extension/core/content/content.js

@@ -206,18 +206,9 @@ this.singlefile.top = this.singlefile.top || (() => {
 			iframe.style.setProperty("border-width", "0", "important");
 			iframe.style.setProperty("margin", "0", "important");
 			iframe.src = browser.runtime.getURL("/extension/ui/pages/downloader.html");
-			iframe.onload = () => {
-				addEventListener("message", listener, false);
-				iframe.contentWindow.postMessage(JSON.stringify([page.filename, page.content]), "*");
-			};
+			iframe.onload = () => iframe.contentWindow.postMessage(JSON.stringify([page.filename, page.content]), "*");
 			document.body.appendChild(iframe);
 		}
-
-		function listener(event) {
-			if (event.data == "content.saved") {
-				removeEventListener("message", listener, false);
-			}
-		}
 	}
 
 	function saveToClipboard(page) {

extension/ui/content/content-download.js

@@ -35,5 +35,4 @@ function listener(event) {
 	link.href = url;
 	link.dispatchEvent(new MouseEvent("click"));
 	URL.revokeObjectURL(url);
-	top.postMessage("content.saved", "*");
 }