Update TypeInferenceTestCase.php

Author: staabm

src/Testing/TypeInferenceTestCase.php

@@ -44,7 +44,6 @@
 use function in_array;
 use function is_dir;
 use function is_string;
-use function PHPStan\dumpType;
 use function preg_match;
 use function sprintf;
 use function str_starts_with;