minor symfony#20453 Remove obsolete whitelist entry (OskarStark)

This PR was merged into the 6.4 branch.

Discussion
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Remove obsolete whitelist entry

![CleanShot 2024-12-07 at 14 43 07@2x](https://github.com/user-attachments/assets/521fa609-9748-4a55-ab17-64783ed863cc)

Commits
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fd5d5bb Remove obsolete whitelist entry

Author: OskarStark

.doctor-rst.yaml

@@ -102,7 +102,6 @@ whitelist:
         - '#. The most important config file is ``app/config/services.yml``, which now is'
         - 'The bin/console Command'
         - '.. _`LDAP injection`: http://projects.webappsec.org/w/page/13246947/LDAP%20Injection'
-        - '.. versionadded:: 2.7.2' # Doctrine
         - '.. versionadded:: 2.8.0' # Doctrine
         - '.. versionadded:: 1.9.0' # Encore
         - '.. versionadded:: 1.18' # Flex in setup/upgrade_minor.rst