strip_core_block_namespace( string $block_name = null )

Source

File: wp-includes/blocks.php

function strip_core_block_namespace( $block_name = null ) {
	if ( is_string( $block_name ) && 0 === strpos( $block_name, 'core/' ) ) {
		return substr( $block_name, 5 );
	}

	return $block_name;
}