bug #37181 [Mailer] Remove an internal annot (fabpot)

This PR was merged into the 4.4 branch.

Discussion
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[Mailer] Remove an internal annot

| Q             | A
| ------------- | ---
| Branch?       | 4.4 <!-- see below -->
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | Fix #36699 <!-- prefix each issue number with "Fix #", if any -->
| License       | MIT
| Doc PR        | n/a

There is no reason to mark this method as being internal. Let's remove it.

Commits
-------

52161f3 [Mailer] Remove an internal annot

src/Symfony/Component/Mailer/Messenger/SendEmailMessage.php

@@ -22,9 +22,6 @@ class SendEmailMessage
     private $message;
     private $envelope;
 
-    /**
-     * @internal
-     */
     public function __construct(RawMessage $message, Envelope $envelope = null)
     {
         $this->message = $message;