fix(php-cs-fixer): drop deprecated PHP_CS_FIXER_IGNORE_ENV (#250) (#251)

php-cs-fixer 3.95 deprecated the env var (removed in 4.0); setting it
printed a stderr deprecation that surfaced as a false `php-cs-fixer: fail`
even though the tool exited 0. The project's .php-cs-fixer.php now owns the
version-bypass via setUnsupportedPhpVersionAllowed(true) (dvsi MR !22047).

Author: fdaviddpt

formatters/php-cs-fixer/php-cs-fixer.py

@@ -92,7 +92,6 @@ def main() -> None:
     cmd.append(file)
 
     env = os.environ.copy()
-    env.setdefault("PHP_CS_FIXER_IGNORE_ENV", "1")
 
     start = time.time()
     try: