Disable WordPress Admin Black Bar

Disabling Admin Bar can be done in 2 methods:

Method #1: Update specific user profile

And then uncheck the “Show Toolbar when viewing site” option & Save (that solution will apply only on your user account).

Method #2: Disable for all users

By pasting this code into your theme’s functions.php:

add_filter( 'show_admin_bar', '__return_false' );