Admin Bar - contains various links to useful admin screens. By default, the admin bar is displayed when a user is logged in and visiting the site and is not displayed in admin screens for single blog installs. For multisite installs, the admin bar is displayed both when visiting the site and in the admin screens. - WordPress.org
- Login to your WordPress Blog
- Go to Users > Your Profile
- In Personal Options
- Uncheck the both Options that are Under Admin Bar i.e.
- Now Just Save it
After saving you will notice that Admin Bar has been disappeared. Now you can have your old WordPress Looks back. Hope you like it and do share it