Remove leftover `matrix_email2matrix_enabled` usage in `devture_systemd_service_manager_services_list_auto`

Fixup for 1b05343aba

group_vars/matrix_servers

@@ -407,8 +407,6 @@ devture_systemd_service_manager_services_list_auto: |
     +
     ([{'name': 'matrix-dynamic-dns.service', 'priority': 5000, 'groups': ['matrix', 'dynamic-dns']}] if matrix_dynamic_dns_enabled else [])
     +
-    ([{'name': 'matrix-email2matrix.service', 'priority': 2000, 'groups': ['matrix', 'bridges', 'email2matrix']}] if matrix_email2matrix_enabled else [])
-    +
     ([{'name': (etherpad_identifier + '.service'), 'priority': 4000, 'groups': ['matrix', 'etherpad']}] if etherpad_enabled else [])
     +
     ([{'name': (grafana_identifier + '.service'), 'priority': 4000, 'groups': ['matrix', 'monitoring', 'grafana']}] if grafana_enabled else [])