Tips on Customizing Build & Control Block Patterns – Boost up Gutenberg Editor

How to Hide Control Block Patterns Admin Menus

function plt_hide_control_block_patterns_menus() {
	//Hide "Block Patterns".
	remove_menu_page('edit.php?post_type=ctrl_block_patterns');
	//Hide "Block Patterns → Block Patterns".
	remove_submenu_page('edit.php?post_type=ctrl_block_patterns', 'edit.php?post_type=ctrl_block_patterns');
	//Hide "Block Patterns → Add New".
	remove_submenu_page('edit.php?post_type=ctrl_block_patterns', 'post-new.php?post_type=ctrl_block_patterns');
	//Hide "Block Patterns → Category".
	remove_submenu_page('edit.php?post_type=ctrl_block_patterns', 'edit-tags.php?taxonomy=block_pattern_category&post_type=ctrl_block_patterns');
	//Hide "Block Patterns → Keywords".
	remove_submenu_page('edit.php?post_type=ctrl_block_patterns', 'edit-tags.php?taxonomy=block_pattern_tag&post_type=ctrl_block_patterns');
	//Hide "Block Patterns → Directory".
	remove_submenu_page('edit.php?post_type=ctrl_block_patterns', 'directory');
	//Hide "Block Patterns → Settings".
	remove_submenu_page('edit.php?post_type=ctrl_block_patterns', 'block-patterns-options');
}

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

Where do I put this code?

How to Hide the "Block Patterns Data" Meta Box

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

	//Hide the "Block Patterns Data" meta box.
	remove_meta_box('ctrl_block_patterns', $screen->id, 'normal');
}

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