minor #36504 [Routing] Remove unused properties from the Route annota…

…tion (fancyweb)

This PR was merged into the 4.4 branch.

Discussion
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[Routing] Remove unused properties from the Route annotation

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | -
| License       | MIT
| Doc PR        | -

From what I see those properties are totally unused.

Commits
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9ac1c76 [Routing] Remove unused properties from the Route annotation

src/Symfony/Component/Routing/Annotation/Route.php

@@ -31,9 +31,6 @@ class Route
     private $methods = [];
     private $schemes = [];
     private $condition;
-    private $locale;
-    private $format;
-    private $utf8;
 
     /**
      * @param array $data An array of key/value parameters