From f5dab18b7d392ce17c17aa0c29f0a2559aca3390 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Mon, 13 Jan 2020 18:21:57 +0100
Subject: [PATCH] Remove dead code, refs #8517

---
 src/Composer/Command/ConfigCommand.php | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/src/Composer/Command/ConfigCommand.php b/src/Composer/Command/ConfigCommand.php
index 3ddd7cb9d..7f79f3251 100644
--- a/src/Composer/Command/ConfigCommand.php
+++ b/src/Composer/Command/ConfigCommand.php
@@ -466,16 +466,6 @@ EOT
                 },
             ),
         );
-        $uniqueOrDotNestedArray = array(
-        	'preferred-install' => array(
-		        function ($val) {
-			        return in_array($val, array('auto', 'source', 'dist'), true);
-		        },
-		        function ($val) {
-			        return $val;
-		        },
-	        ),
-        );
 
         if ($input->getOption('unset') && (isset($uniqueConfigValues[$settingKey]) || isset($multiConfigValues[$settingKey]))) {
             if ($settingKey === 'disable-tls' && $this->config->get('disable-tls')) {