function plt_hide_generateblocks_menus() {
//Hide the "GenerateBlocks" menu.
remove_menu_page('generateblocks');
//Hide the "GenerateBlocks → Settings" menu.
remove_submenu_page('generateblocks', 'generateblocks-settings');
//Hide the "GenerateBlocks → Upgrade" menu.
remove_submenu_page('generateblocks', 'generateblocks-upgrade');
}
add_action('admin_menu', 'plt_hide_generateblocks_menus', 11);