Remove unused use-statements

Author: tvdijen

tests/Assert/XPathFilterTest.php

@@ -4,7 +4,6 @@
 
 namespace SimpleSAML\XML\Test\Assert;
 
-use InvalidArgumentException;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;