Merge pull request #15500 from nextcloud/nickvergessen-patch-1

chore: Update CODEOWNERS

Author: nickvergessen

.github/CODEOWNERS

@@ -1,8 +1,6 @@
 /*/groupware/calendar.rst                                   @SebastianKrupinski @st3iny @tcitworld
 /*/groupware/contacts.rst                                   @GVodyanov @hamza221 @SebastianKrupinski
 /*/groupware/mail.rst                                       @ChristophWurst @GretaD @kesselb
-/*/security.rst                                             @nickvergessen
-/admin_manual/configuration_database                        @nickvergessen
 /admin_manual/file_workflows                                @nickvergessen
 /developer_manual/client_apis/OCS/ocs-status-api.rst        @Antreesy @nickvergessen
 /developer_manual/digging_deeper/groupware/calendar.rst     @SebastianKrupinski @st3iny @tcitworld