drd_server does not delete it's variables when being uninstalled
>>> [!note] Migrated issue
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<!-- Migrated from issue #2777061. -->
Reported by: [dahousecat](https://www.drupal.org/user/1410992)
>>>
<p>I installed drd_server, set up the allowed IP address and Implementation, Cipher, Key and IV.<br>
I then wanted to revert all of this so disabled and uninstalled the module and then re enabled it (drush dre) but my settings were still there.</p>
<p>These variables should be deleted in the modules uninstall hook.</p>
<p>* drd_allowed_referer<br>
* drd_aes_keys<br>
* drd_server_svn_enabled<br>
* drd_server_svn_username<br>
* drd_server_svn_password</p>
issue