wordpress: Remove top admin bar from frontend

Way 1 : Using Admin panal

To remove the toolbar from frontend, Navigate to Users > Your Profile. Scroll down to “Toolbar” and Uncheck “Show Toolbar when viewing site.”

Save the setting by clicking update profile button at the bottom.

WAY 2 : Paste this code in your theme’s functions.php

add_filter('show_admin_bar', '__return_false');

WAY 3 : Disable Admin Bar for All Users Except for Administrators

add_action('after_setup_theme', 'remove_admin_bar');

function remove_admin_bar() {
if (!current_user_can('administrator') && !is_admin()) {
  show_admin_bar(false);
}
}

OR : Disable Admin Bar for All Users

/* Disable WordPress Admin Bar for all users but admins. */
  show_admin_bar(false);