Be consistent with other regression tests

Author: sebastianbergmann

tests/end-to-end/regression/6294-display-errors-off.phpt

@@ -1,6 +1,4 @@
 --TEST--
-Silent failure of PHP fatal errors
-
 https://github.com/sebastianbergmann/phpunit/issues/6294
 --SKIPIF--
 <?php declare(strict_types=1);

tests/end-to-end/regression/6294-display-errors-on.phpt

@@ -1,6 +1,4 @@
 --TEST--
-Silent failure of PHP fatal errors
-
 https://github.com/sebastianbergmann/phpunit/issues/6294
 --SKIPIF--
 <?php declare(strict_types=1);