Revert "feat: launch minimized (#1193)"

This reverts commit 14f7cd0.

Author: setchy

main.js

@@ -43,9 +43,6 @@ const mb = menubar({
 mb.on('ready', () => {
   mb.app.setAppUserModelId('com.electron.gitify');
   mb.tray.setIgnoreDoubleClickEvents(true);
-
-  mb.hideWindow();
-
   // Force the window to retrieve its previous zoom factor
   mb.window.webContents.setZoomFactor(mb.window.webContents.getZoomFactor());