How to Hide E Unlocked - Student Result Admin Menus

function plt_hide_e_unlocked_student_result_menus() {
	//Hide "EU Student Result".
	remove_menu_page('eusr-student-result');
	//Hide "EU Student Result → Dashboard".
	remove_submenu_page('eusr-student-result', 'eusr-student-result');
	//Hide "EU Student Result → Classes".
	remove_submenu_page('eusr-student-result', 'eusr-class');
	//Hide "EU Student Result → Subjects".
	remove_submenu_page('eusr-student-result', 'eusr-subject');
	//Hide "EU Student Result → Add Student".
	remove_submenu_page('eusr-student-result', 'eusr-add-record');
	//Hide "EU Student Result → Add Mark".
	remove_submenu_page('eusr-student-result', 'eusr-add-mark');
	//Hide "EU Student Result → All Students".
	remove_submenu_page('eusr-student-result', 'eusr-all-students');
	//Hide "EU Student Result → Settings".
	remove_submenu_page('eusr-student-result', 'eusr-settings');
	//Hide "EU Student Result → Help & Guide".
	remove_submenu_page('eusr-student-result', 'eusr-help');
}

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

Where do I put this code?