minor #17843 Minor: Removing code line (ThomasLandauer)

This PR was merged into the 5.4 branch.

Discussion
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Minor: Removing code line

Page: https://symfony.com/doc/5.4/mailer.html

This line is not new, it's already present in the code block above.

Commits
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f213e18 Minor: Removing code line

Author: OskarStark

mailer.rst

@@ -752,8 +752,6 @@ the ``TemplatedEmail`` class:
 
 .. code-block:: diff
 
-    + use Symfony\Bridge\Twig\Mime\TemplatedEmail;
-
     $email = (new TemplatedEmail())
         // ...