Skype prevent from sleeping with open lid (automatic sleep settings)

For some time already it not sleeping automatically

I have tried to do all possible things to fix it ,and now i have found out that it is Skype which is preventing computer from sleeping ) ANd i saw there are people having same problem but on Windows )

So i would appreciate if someone can tell me what to do with this ?

(one thing is ok - if to have old versions of Skype this is not happening ,but any after 5.5 version of Skype make this effect - preventing from sleep )

As i read what people say = problem is in a Skype updater services,i dont know how can i delete this maybe ,cause all setting i have are good )