2. Click on the Google Profile and select Account Setting.
3. Now click on the Account Overview from left window panel.
4. Now look for Services
if you want to remove all Google services then click Close Account and Delete all services.... or you want to remove only Google+ and profile then click Delete profile and remove associated...
5.Now select (check mark) Delete Google+ Content if you are choosing Delete profile and Remove associated social features.
Please be careful while deleting your account because once it deleted will not be recover back.