Removed unneeded links

Author: javiereguiluz

configuration/secrets.rst

@@ -314,7 +314,3 @@ The secrets system is enabled by default and some of its behavior can be configu
                 // ->decryptionEnvVar('base64:default::SYMFONY_DECRYPTION_SECRET')
             ;
         };
-
-
-.. _`libsodium`: https://pecl.php.net/package/libsodium
-.. _`paragonie/sodium_compat`: https://github.com/paragonie/sodium_compat

reference/configuration/security.rst

@@ -852,7 +852,6 @@ role inheritance rules by creating a role hierarchy, as explained in
 :ref:`security-role-hierarchy`.
 
 .. _`PBKDF2`: https://en.wikipedia.org/wiki/PBKDF2
-.. _`libsodium`: https://pecl.php.net/package/libsodium
 .. _`Session Fixation`: https://owasp.org/www-community/attacks/Session_fixation
 .. _`Argon2 key derivation function`: https://en.wikipedia.org/wiki/Argon2
 .. _`bcrypt password hashing function`: https://en.wikipedia.org/wiki/Bcrypt

security/named_hashers.rst

@@ -186,5 +186,3 @@ you must register a service for it in order to use it as a named hasher:
 
 This creates a hasher named ``app_hasher`` from a service with the ID
 ``App\Security\Hasher\MyCustomPasswordHasher``.
-
-.. _`libsodium`: https://pecl.php.net/package/libsodium