Remove fallback locale.

app/config/app.php

@@ -41,19 +41,6 @@ return array(
 
 	'locale' => 'en',
 
-	/*
-	|--------------------------------------------------------------------------
-	| Application Fallback Locale
-	|--------------------------------------------------------------------------
-	|
-	| The fallback locale determines the locale to use when the current one
-	| is not available. You may change the value to correspond to any of
-	| the language folders that are provided through your application.
-	|
-	*/
-
-	'fallback_locale' => 'en',
-
 	/*
 	|--------------------------------------------------------------------------
 	| Encryption Key