minor #38860 Remove translation keys that does not exists in English (Nyholm)

This PR was merged into the 4.4 branch.

Discussion
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Remove translation keys that does not exists in English

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

These keys has been removed from the [English file](https://github.com/symfony/symfony/blob/4.4/src/Symfony/Component/Security/Core/Resources/translations/security.en.xlf#L29-L36)

Commits
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29e3964da6 Remove translation keys that does not exists in English

src/Symfony/Component/Security/Core/Resources/translations/security.fi.xlf

@@ -30,10 +30,6 @@
                 <source>Invalid CSRF token.</source>
                 <target>Virheellinen CSRF tunnus.</target>
             </trans-unit>
-            <trans-unit id="8">
-                <source>Digest nonce has expired.</source>
-                <target>Digest nonce on vanhentunut.</target>
-            </trans-unit>
             <trans-unit id="9">
                 <source>No authentication provider found to support the authentication token.</source>
                 <target>Autentikointi tunnukselle ei löydetty tuettua autentikointi tarjoajaa.</target>

src/Symfony/Component/Security/Core/Resources/translations/security.sq.xlf

@@ -30,10 +30,6 @@
                 <source>Invalid CSRF token.</source>
                 <target>Identifikues i pavlefshëm CSRF.</target>
             </trans-unit>
-            <trans-unit id="8">
-                <source>Digest nonce has expired.</source>
-                <target>Numeri një perdorimësh i verifikimit Digest ka skaduar.</target>
-            </trans-unit>
             <trans-unit id="9">
                 <source>No authentication provider found to support the authentication token.</source>
                 <target>Asnjë ofrues i vërtetimit nuk u gjet që të mbështesë simbolin e vërtetimit.</target>

src/Symfony/Component/Security/Core/Resources/translations/security.zh_TW.xlf

@@ -30,10 +30,6 @@
                 <source>Invalid CSRF token.</source>
                 <target>無效的 CSRF token 。</target>
             </trans-unit>
-            <trans-unit id="8">
-                <source>Digest nonce has expired.</source>
-                <target>摘要隨機串（digest nonce）已過期。</target>
-            </trans-unit>
             <trans-unit id="9">
                 <source>No authentication provider found to support the authentication token.</source>
                 <target>沒有找到支持此 token 的身份驗證服務提供方。</target>