Tips on Customizing BBP Core – Expand bbPress powered forums with useful features

How to Hide BBP Core Admin Menus

function plt_hide_bbp_core_menus() {
	//Hide "BBP Core".
	remove_menu_page('bbp-core');
	//Hide "BBP Core → Forum Builder".
	remove_submenu_page('bbp-core', 'bbp-core');
	//Hide "BBP Core → BBPC Settings".
	remove_submenu_page('bbp-core', 'bbp-core-settings');
	//Hide "BBP Core → Upgrade".
	remove_submenu_page('bbp-core', 'bbp-core-pricing');
}

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

Where do I put this code?

How to Hide the "bbPress Voting" Meta Box

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

	//Hide the "bbPress Voting" meta box.
	remove_meta_box('bbp_voting', $screen->id, 'side');
}

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