Clean out files that should not be pushed to git for composer publish

vendor/nikic/php-parser/lib/PhpParser/Node/AttributeGroup.php

@@ -1,29 +0,0 @@
-<?php declare(strict_types=1);
-
-namespace PhpParser\Node;
-
-use PhpParser\Node;
-use PhpParser\NodeAbstract;
-
-class AttributeGroup extends NodeAbstract
-{
-    /** @var Attribute[] Attributes */
-    public $attrs;
-
-    /**
-     * @param Attribute[] $attrs PHP attributes
-     * @param array $attributes Additional node attributes
-     */
-    public function __construct(array $attrs, array $attributes = []) {
-        $this->attributes = $attributes;
-        $this->attrs = $attrs;
-    }
-
-    public function getSubNodeNames() : array {
-        return ['attrs'];
-    }
-
-    public function getType() : string {
-        return 'AttributeGroup';
-    }
-}