From 9bd255d8f1915005ab7af1647201d513519eb16b Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Tue, 2 Jun 2020 14:41:18 +0200
Subject: [PATCH] Remove some dead code from RuleSetGenerator

---
 .../DependencyResolver/RuleSetGenerator.php        | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/src/Composer/DependencyResolver/RuleSetGenerator.php b/src/Composer/DependencyResolver/RuleSetGenerator.php
index 12bd17783..9b4326c12 100644
--- a/src/Composer/DependencyResolver/RuleSetGenerator.php
+++ b/src/Composer/DependencyResolver/RuleSetGenerator.php
@@ -215,20 +215,6 @@ class RuleSetGenerator
         }
     }
 
-    protected function obsoleteImpossibleForAlias($package, $provider)
-    {
-        $packageIsAlias = $package instanceof AliasPackage;
-        $providerIsAlias = $provider instanceof AliasPackage;
-
-        $impossible = (
-            ($packageIsAlias && $package->getAliasOf() === $provider) ||
-            ($providerIsAlias && $provider->getAliasOf() === $package) ||
-            ($packageIsAlias && $providerIsAlias && $provider->getAliasOf() === $package->getAliasOf())
-        );
-
-        return $impossible;
-    }
-
     protected function addRulesForRequest(Request $request, $ignorePlatformReqs)
     {
         $unlockableMap = $request->getUnlockableMap();