How to Hide IncredibleDocs Admin Menus

function plt_hide_incredibledocs_menus() {
	//Hide "IncredibleDocs".
	remove_menu_page('idocs-dashboard');
	//Hide "IncredibleDocs → Dashboard".
	remove_submenu_page('idocs-dashboard', 'idocs-dashboard');
	//Hide "IncredibleDocs → Content".
	remove_submenu_page('idocs-dashboard', 'edit.php?post_type=idocs_content');
	//Hide "IncredibleDocs → Categories".
	remove_submenu_page('idocs-dashboard', 'edit-tags.php?post_type=idocs_content&taxonomy=idocs-category-taxo');
	//Hide "IncredibleDocs → Tags".
	remove_submenu_page('idocs-dashboard', 'edit-tags.php?post_type=idocs_content&taxonomy=idocs-tag-taxo');
	//Hide "IncredibleDocs → FAQ Groups".
	remove_submenu_page('idocs-dashboard', 'edit-tags.php?post_type=idocs_content&taxonomy=idocs-faq-group-taxo');
	//Hide "IncredibleDocs → Knowledge Bases".
	remove_submenu_page('idocs-dashboard', 'edit-tags.php?post_type=idocs_content&taxonomy=idocs-kb-taxo');
	//Hide "IncredibleDocs → Settings".
	remove_submenu_page('idocs-dashboard', 'idocs-settings');
	//Hide "IncredibleDocs → Analytics".
	remove_submenu_page('idocs-dashboard', 'idocs-analytics');
	//Hide "IncredibleDocs → Upgrade to Pro".
	remove_submenu_page('idocs-dashboard', 'https://incrediblewp.io/incredibledocs-pro');
}

add_action('admin_menu', 'plt_hide_incredibledocs_menus', 11);
Where do I put this code?