How to Hide Content Blocks Builder Admin Menus

function plt_hide_content_blocks_builder_menus() {
	//Hide "Custom Blocks".
	remove_menu_page('edit.php?post_type=boldblocks_block');
	//Hide "Custom Blocks → All Blocks".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'edit.php?post_type=boldblocks_block');
	//Hide "Custom Blocks → Add New Block".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'post-new.php?post_type=boldblocks_block');
	//Hide "Custom Blocks → Block Library".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'cbb-block-library');
	//Hide "Custom Blocks → All Variations".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'edit.php?post_type=boldblocks_variation');
	//Hide "Custom Blocks → Variation Library".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'cbb-variation-library');
	//Hide "Custom Blocks → All Patterns".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'edit.php?post_type=boldblocks_pattern');
	//Hide "Custom Blocks → Settings".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'cbb-settings');
	//Hide "Custom Blocks → Contact Us".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'content-blocks-builder-contact');
	//Hide "Custom Blocks → Support Forum".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'content-blocks-builder-wp-support-forum');
	//Hide "Custom Blocks → Upgrade".
	remove_submenu_page('edit.php?post_type=boldblocks_block', 'content-blocks-builder-pricing');
}

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

Where do I put this code?