How to hide the top admin bar at the frontend in WordPress?
There are two ways to do so:
1. GO to Admin panel -->> On the left side find the menu name USERS -->> CLICK ON YOUR PROFILE MENU.
Here you can see the Checkbox option to the heading ** Toolbar **.
Make uncheck for hiding. Click on Update profile button to save your changes. The button is on the last page of the site.
2. Add following code functions.php
add_filter('show_admin_bar', '__return_false');