chore: remove duplicated onerror listener

Author: Miodec

frontend/src/ts/ui.ts

@@ -1,6 +1,5 @@
 import Config from "./config";
 import * as Caret from "./test/caret";
-import * as Notifications from "./elements/notifications";
 import * as CustomText from "./test/custom-text";
 import * as TestState from "./test/test-state";
 import * as ConfigEvent from "./observables/config-event";
@@ -56,13 +55,6 @@ function updateKeytips(): void {
 }
 
 if (isDevEnvironment()) {
-  window.onerror = function (error): void {
-    if (JSON.stringify(error).includes("x_magnitude")) return;
-    Notifications.add(JSON.stringify(error), -1, {
-      important: true,
-      duration: 5,
-    });
-  };
   $("header #logo .top").text("localhost");
   $("head title").text($("head title").text() + " (localhost)");
   $("body").append(