minor #9920 removed unneeded use statements (fabpot)

This PR was merged into the 2.3 branch.

Discussion
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removed unneeded use statements

| Q             | A
| ------------- | ---
| License       | MIT

Commits
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7f9a366 removed unneeded use statements

Author: fabpot

Encoder/BCryptPasswordEncoder.php

@@ -11,7 +11,6 @@
 
 namespace Symfony\Component\Security\Core\Encoder;
 
-use Symfony\Component\Security\Core\Encoder\BasePasswordEncoder;
 use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 
 /**

Exception/NonceExpiredException.php

@@ -11,8 +11,6 @@
 
 namespace Symfony\Component\Security\Core\Exception;
 
-use Symfony\Component\Security\Core\Exception\AuthenticationException;
-
 /**
  * NonceExpiredException is thrown when an authentication is rejected because
  * the digest nonce has expired.