Remove useless matrix_nginx_proxy_synapse_presence_disabled variable definition

group_vars/matrix_servers

@@ -1815,8 +1815,6 @@ matrix_nginx_proxy_self_check_validate_certificates: "{{ false if matrix_ssl_ret
 # and https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1074
 matrix_nginx_proxy_ocsp_stapling_enabled: "{{ matrix_ssl_retrieval_method != 'self-signed' }}"
 
-matrix_nginx_proxy_synapse_presence_disabled: "{{ not matrix_synapse_presence_enabled }}"
-
 matrix_nginx_proxy_synapse_workers_enabled: "{{ matrix_synapse_workers_enabled }}"
 matrix_nginx_proxy_synapse_workers_list: "{{ matrix_synapse_workers_enabled_list }}"
 matrix_nginx_proxy_synapse_generic_worker_client_server_locations: "{{ matrix_synapse_workers_generic_worker_client_server_endpoints }}"