Disable the Admin Bar that now appears on the public side of WordPress blogs.
For a hassle free integration, drop the plugin file into <code>wp-content/mu-plugins</code> (create the directory if needed) and it will be automatically activated.

Disable Admin Bar

tempor

This plugin removes the unobtrusive footer text installed by “Ozh Admin Drop Down Menu” in the backend (admin) of wordpress.

Remove Ozh unobstrusive credits in footer

It still works with at least wordpress 4.9.3 version.

Great!

Removes Ozh footer text from the admin backend. Author: Polemos

Disable Admin Bar vs Remove Ozh unobstrusive credits in footer