fix(logbook): remove 'All incl. System' filter, Ansible triggers as booking logs

Ansible trigger successes now logged as type 'booking' so they appear
in the default filter view. Removed the redundant 'All incl. System'
filter button.

src/components/Logbook.tsx

@@ -131,7 +131,6 @@ export default function Logbook({ logs, devices, users, currentUser, onAddLog }:
               { key: 'maintenance',label: 'Maintenance' },
               { key: 'status',     label: 'Status' },
               { key: 'system',     label: 'System' },
-              { key: 'all',        label: 'All incl. System' },
             ].map(({ key, label }) => (
               <button
                 key={key}