Revert "improve portability"

This reverts commit 719eb0c.

Author: sebastianbergmann

tests/end-to-end/cli/log-events-text-invalid-argument.phpt

@@ -16,4 +16,4 @@ require __DIR__ . '/../../bootstrap.php';
 --EXPECTF--
 PHPUnit %s by Sebastian Bergmann and contributors.
 
-The path "%s" specified for the --log-events-text option could not be resolved
+The path "/tmp/invalid-directory/invalid.file" specified for the --log-events-text option could not be resolved

tests/end-to-end/cli/log-events-verbose-text-invalid-argument.phpt

@@ -16,4 +16,4 @@ require __DIR__ . '/../../bootstrap.php';
 --EXPECTF--
 PHPUnit %s by Sebastian Bergmann and contributors.
 
-The path "%s" specified for the --log-events-verbose-text option could not be resolved
+The path "/tmp/invalid-directory/invalid.file" specified for the --log-events-verbose-text option could not be resolved