minor #19269 [Validator] [Security] Remove unrelevant comments in Security and Validator components (hhamon)

This PR was merged into the 2.7 branch.

Discussion
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[Validator] [Security] Remove unrelevant comments in Security and Validator components

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | ~
| License       | MIT
| Doc PR        | ~

Commits
-------

2cec4a6 Remove and change unrelevant comments in Validator and Security components.

src/Symfony/Component/Security/Csrf/TokenStorage/SessionTokenStorage.php

@@ -15,7 +15,7 @@ use Symfony\Component\HttpFoundation\Session\SessionInterface;
 use Symfony\Component\Security\Csrf\Exception\TokenNotFoundException;
 
 /**
- * Token storage that uses a Symfony2 Session object.
+ * Token storage that uses a Symfony Session object.
  *
  * @since  2.4
  *

src/Symfony/Component/Validator/Violation/ConstraintViolationBuilder.php

@@ -199,7 +199,7 @@ class ConstraintViolationBuilder implements ConstraintViolationBuilderInterface
                     $this->message,
                     $this->plural,
                     $this->parameters,
-                    $this->translationDomain#
+                    $this->translationDomain
                 );
             } catch (\InvalidArgumentException $e) {
                 $translatedMessage = $this->translator->trans(