Remove override assignment

tests/Composer/Test/Package/Loader/ArrayLoaderTest.php

@@ -148,7 +148,6 @@ class ArrayLoaderTest extends TestCase
     {
         $package = $this->loader->load($config);
         $dumper = new ArrayDumper;
-        $expectedConfig = $config;
         $expectedConfig = $this->fixConfigWhenLoadConfigIsFalse($config);
         $this->assertEquals($expectedConfig, $dumper->dump($package));
     }