How to Hide Easy Dropbox Integration - Browse, Upload, Manage Your Dropbox Files from Your Website Admin Menus

function plt_hide_easy_dropbox_integration_menus() {
	//Hide "Dropbox".
	remove_menu_page('easy-dropbox-integration');
	//Hide "Dropbox → File Browser".
	remove_submenu_page('easy-dropbox-integration', 'easy-dropbox-integration');
	//Hide "Dropbox → Shortcode Builder".
	remove_submenu_page('easy-dropbox-integration', 'easy-dropbox-integration-shortcode-builder');
	//Hide "Dropbox → Settings".
	remove_submenu_page('easy-dropbox-integration', 'easy-dropbox-integration-settings');
	//Hide "Dropbox → Contact Us".
	remove_submenu_page('easy-dropbox-integration', 'easy-dropbox-integration-contact');
	//Hide "Dropbox → Support Forum".
	remove_submenu_page('easy-dropbox-integration', 'easy-dropbox-integration-wp-support-forum');
	//Hide "Dropbox → Upgrade".
	remove_submenu_page('easy-dropbox-integration', 'easy-dropbox-integration-pricing');
}

add_action('admin_menu', 'plt_hide_easy_dropbox_integration_menus', 1000000000);

Where do I put this code?