Remove unnecessary code

packages/app/src/mixins/auto-lock.ts

@@ -18,7 +18,6 @@ export function AutoLock<B extends Constructor<Object>>(baseClass: B) {
             document.addEventListener("keydown", () => this._startTimer());
             document.addEventListener("pause", () => this._pause());
             document.addEventListener("resume", () => this._resume());
-            document.addEventListener("lock-app", () => this._doLock());
         }
 
         _cancelAutoLock() {

packages/electron/src/main.ts

@@ -125,8 +125,6 @@ function createWindow(path: string = "") {
         autoHideMenuBar: true,
         webPreferences: {
             devTools: debug,
-            nodeIntegration: true,
-            contextIsolation: false,
         },
         minWidth,
         minHeight,

packages/electron/src/platform.ts

@@ -1,13 +1,4 @@
-import { ipcRenderer } from "electron";
 import { Platform } from "@padloc/core/src/platform";
 import { WebPlatform } from "@padloc/app/src/lib/platform";
 
-export class ElectronPlatform extends WebPlatform implements Platform {
-    constructor() {
-        super();
-
-        ipcRenderer.on("electron-lock-app", () => {
-            window.document.dispatchEvent(new CustomEvent("lock-app"));
-        });
-    }
-}
+export class ElectronPlatform extends WebPlatform implements Platform {}