refresh smaller icons to use new theme

app/src/main-process/app-window.ts

@@ -7,7 +7,6 @@ import { URLActionType } from '../lib/parse-app-url'
 import { ILaunchStats } from '../lib/stats'
 import { menuFromElectronMenu } from '../models/app-menu'
 import { now } from './now'
-import * as path from 'path'
 import windowStateKeeper from 'electron-window-state'
 
 export class AppWindow {
@@ -57,8 +56,6 @@ export class AppWindow {
     } else if (__WIN32__) {
       windowOptions.frame = false
     } else if (__LINUX__) {
-      windowOptions.icon = path.join(__dirname, 'static', 'icon-logo.png')
-
       // relax restriction here for users trying to run app at a small
       // resolution and any other side-effects of dropping this restriction are
       // currently unsupported