How to Hide Codesala SEO Content Engine Admin Menus

function plt_hide_codesala_seo_content_engine_menus() {
	//Hide "SEO Content".
	remove_menu_page('csrm');
	//Hide "SEO Content → Dashboard".
	remove_submenu_page('csrm', 'csrm');
	//Hide "SEO Content → Keywords".
	remove_submenu_page('csrm', 'csrm-keywords');
	//Hide "SEO Content → Generate".
	remove_submenu_page('csrm', 'csrm-generate');
	//Hide "SEO Content → Analytics".
	remove_submenu_page('csrm', 'csrm-analytics');
	//Hide "SEO Content → SEO Optimizer".
	remove_submenu_page('csrm', 'csrm-optimizer');
	//Hide "SEO Content → Settings".
	remove_submenu_page('csrm', 'csrm-settings');
}

add_action('admin_menu', 'plt_hide_codesala_seo_content_engine_menus', 11);

Where do I put this code?