Tips on Customizing RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging

How to Hide WP RSS Aggregator Admin Menus

function plt_hide_wp_rss_aggregator_menus() {
	//Hide "RSS Aggregator".
	remove_menu_page('edit.php?post_type=wprss_feed');
	//Hide "RSS Aggregator → Feed Sources".
	remove_submenu_page('edit.php?post_type=wprss_feed', 'edit.php?post_type=wprss_feed');
	//Hide "RSS Aggregator → Feed Items".
	remove_submenu_page('edit.php?post_type=wprss_feed', 'edit.php?post_type=wprss_feed_item');
	//Hide "RSS Aggregator → Templates".
	remove_submenu_page('edit.php?post_type=wprss_feed', 'wpra_feed_templates');
	//Hide "RSS Aggregator → Tools".
	remove_submenu_page('edit.php?post_type=wprss_feed', 'wpra_tools');
	//Hide "RSS Aggregator → Settings".
	remove_submenu_page('edit.php?post_type=wprss_feed', 'wprss-aggregator-settings');
	//Hide "RSS Aggregator → Upgrade".
	remove_submenu_page('edit.php?post_type=wprss_feed', 'wprss_addons');
	//Hide "RSS Aggregator → Help & Support".
	remove_submenu_page('edit.php?post_type=wprss_feed', 'wprss-help');
}

add_action('admin_menu', 'plt_hide_wp_rss_aggregator_menus', 61);

Where do I put this code?

How to Hide WP RSS Aggregator Meta Boxes

function plt_hide_wp_rss_aggregator_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Feed Source Details" meta box.
	remove_meta_box('custom_meta_box', $screen->id, 'normal');
	//Hide the "Save Feed Source" meta box.
	remove_meta_box('submitdiv', $screen->id, 'side');
	//Hide the "Feed Preview" meta box.
	remove_meta_box('preview_meta_box', $screen->id, 'side');
	//Hide the "Feed Processing" meta box.
	remove_meta_box('wprss-feed-processing-meta', $screen->id, 'side');
	//Hide the "Share The Love" meta box.
	remove_meta_box('wprss-like-meta', $screen->id, 'side');
}

add_action('add_meta_boxes', 'plt_hide_wp_rss_aggregator_metaboxes', 20);