removed deprecated locale_fallback setting

src/Silex/Provider/TranslationServiceProvider.php

@@ -33,14 +33,7 @@ class TranslationServiceProvider implements ServiceProviderInterface
             }
 
             $translator = new Translator($app, $app['translator.message_selector']);
-
-            // Handle deprecated 'locale_fallback'
-            if (isset($app['locale_fallback'])) {
-                $app['locale_fallbacks'] = (array) $app['locale_fallback'];
-            }
-
             $translator->setFallbackLocales($app['locale_fallbacks']);
-
             $translator->addLoader('array', new ArrayLoader());
             $translator->addLoader('xliff', new XliffFileLoader());
 

tests/Silex/Tests/Provider/TranslationServiceProviderTest.php

@@ -104,15 +104,6 @@ class TranslationServiceProviderTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals($expected, $result);
     }
 
-    public function testBackwardCompatiblityForFallback()
-    {
-        $app = $this->getPreparedApp();
-        $app['locale_fallback'] = 'de';
-
-        $result = $app['translator']->trans('key1', array(), null, 'ru');
-        $this->assertEquals('The german translation', $result);
-    }
-
     public function testFallbacks()
     {
         $app = $this->getPreparedApp();