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diff --git a/vendor/psy/psysh/src/Psy/CodeCleaner/RequirePass.php b/vendor/psy/psysh/src/Psy/CodeCleaner/RequirePass.php
deleted file mode 100644
index 00b506088..000000000
--- a/vendor/psy/psysh/src/Psy/CodeCleaner/RequirePass.php
+++ /dev/null
@@ -1,102 +0,0 @@
-<?php
-
-/*
- * This file is part of Psy Shell.
- *
- * (c) 2012-2017 Justin Hileman
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Psy\CodeCleaner;
-
-use PhpParser\Node;
-use PhpParser\Node\Arg;
-use PhpParser\Node\Expr\Include_;
-use PhpParser\Node\Expr\StaticCall;
-use PhpParser\Node\Name\FullyQualified as FullyQualifiedName;
-use PhpParser\Node\Scalar\LNumber;
-use Psy\Exception\ErrorException;
-use Psy\Exception\FatalErrorException;
-use Psy\Shell;
-
-/**
- * Add runtime validation for `require` and `require_once` calls.
- */
-class RequirePass extends CodeCleanerPass
-{
-    private static $requireTypes = array(Include_::TYPE_REQUIRE, Include_::TYPE_REQUIRE_ONCE);
-
-    /**
-     * {@inheritdoc}
-     */
-    public function enterNode(Node $origNode)
-    {
-        if (!$this->isRequireNode($origNode)) {
-            return;
-        }
-
-        $node = clone $origNode;
-
-        /*
-         * rewrite
-         *
-         *   $foo = require $bar
-         *
-         * to
-         *
-         *   $foo = require \Psy\CodeCleaner\RequirePass::resolve($bar)
-         */
-        $node->expr = new StaticCall(
-            new FullyQualifiedName('Psy\CodeCleaner\RequirePass'),
-            'resolve',
-            array(new Arg($origNode->expr), new Arg(new LNumber($origNode->getLine()))),
-            $origNode->getAttributes()
-        );
-
-        return $node;
-    }
-
-    /**
-     * Runtime validation that $file can be resolved as an include path.
-     *
-     * If $file can be resolved, return $file. Otherwise throw a fatal error exception.
-     *
-     * @throws FatalErrorException when unable to resolve include path for $file
-     * @throws ErrorException      if $file is empty and E_WARNING is included in error_reporting level
-     *
-     * @param string $file
-     * @param int    $lineNumber Line number of the original require expression
-     *
-     * @return string Exactly the same as $file
-     */
-    public static function resolve($file, $lineNumber = null)
-    {
-        $file = (string) $file;
-
-        if ($file === '') {
-            // @todo Shell::handleError would be better here, because we could
-            // fake the file and line number, but we can't call it statically.
-            // So we're duplicating some of the logics here.
-            if (E_WARNING & error_reporting()) {
-                ErrorException::throwException(E_WARNING, 'Filename cannot be empty', null, $lineNumber);
-            } else {
-                // @todo trigger an error as fallback? this is pretty ugly…
-                // trigger_error('Filename cannot be empty', E_USER_WARNING);
-            }
-        }
-
-        if ($file === '' || !stream_resolve_include_path($file)) {
-            $msg = sprintf("Failed opening required '%s'", $file);
-            throw new FatalErrorException($msg, 0, E_ERROR, null, $lineNumber);
-        }
-
-        return $file;
-    }
-
-    private function isRequireNode(Node $node)
-    {
-        return $node instanceof Include_ && in_array($node->type, self::$requireTypes);
-    }
-}