Rule source on GitHub

DowngradeTrailingCommasInParamUseRector

Remove trailing commas in param or use list

 class SomeClass
 {
-    public function __construct(string $value1, string $value2,)
+    public function __construct(string $value1, string $value2)
     {
-        function (string $value1, string $value2,) {
+        function (string $value1, string $value2) {
         };

-        function () use ($value1, $value2,) {
+        function () use ($value1, $value2) {
         };
     }
 }

-function inFunction(string $value1, string $value2,)
+function inFunction(string $value1, string $value2)
 {
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\DowngradePhp80\Rector\ClassMethod\DowngradeTrailingCommasInParamUseRector;

return RectorConfig::configure()
    ->withRules([
        DowngradeTrailingCommasInParamUseRector::class,
    ]);