How to remove admin bar from WordPress

First of all login to your WordPress account.

After this, in the menu given in the left side, move your mouse pointer over the users and click on Your Profile from the list.
By clicking on Your Profile, you will reach the settings page of your profile.

In this page you will see a checkbox named Toolbar. Uncheck this checkbox and go to the bottom and click on Update Profile.

Your new settings will be saved as soon as you click on Update Profile.

Now you can see that the Admin Bar has been removed from your website.