Use new permissions, remove inconsistencies

doc/api/resources/teams.rst

@@ -63,8 +63,6 @@ Possible values for ``limit_event_permissions`` defined in the core pretix syste
 
     event.settings.general:write
     event.settings.payment:write
-    event.settings.plugins:write
-    event.settings.email.sender:write
     event.settings.tax:write
     event.settings.invoicing:write
     event.subevents:write