Disable auto-unlocking until it actually works properly.

lib/units/device/plugins/group.js

@@ -100,13 +100,11 @@ module.exports = syrup.serial()
     plugin.on('join', function() {
       service.wake()
       service.acquireWakeLock()
-      service.unlock()
     })
 
     plugin.on('leave', function() {
       service.pressKey('home')
       service.releaseWakeLock()
-      service.lock()
     })
 
     router