Android delete account from 5.0 lollipop

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In order to remove an user account you need to perform:

1. Go to device settings (As shown in the question).
2. click on accounts Tab (3rd in the option list).
3. Click on Google Account (select the account which you wish to Remove).
4. First you need to Stop Sync (As done in question "synchr. wylaczonaa").
5. On Samsung devices these options are shown by pressing and holding the Left soft key beside home Button.(shown using red mark in image below).
6. Click on Remove Account.

I would suggest read the above steps and you are good to go.