Remove or strip the scheme from a file stream wrapper in Drupal 9

stripscheme.php

<?php

$uri = 'public://path/to/file.txt';
/** @var \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface $stream_wrapper_manager */
$stream_wrapper_manager = \Drupal::service('stream_wrapper_manager');
$target = $stream_wrapper_manager->getTarget($uri);
// $target = 'path/to/file.txt';