remove extraneous variables and whitespace

roles/matrix-prometheus-node-exporter/defaults/main.yml

@@ -60,6 +60,3 @@ matrix_prometheus_node_exporter_container_http_host_bind_port: ''
 # If matrix_prometheus_node_exporter_container_http_host_bind_port is set to an IP that is not  0.0.0.0 and a port, that "<ip>:<port>" value will be used
 # Otherwise this value will be empty and you will have to manually configure your NGINX config file. (If you are using the config files generated by this playbook, you will have to edit matrix-domain.conf)
 matrix_prometheus_node_exporter_matrix_nginx_proxy_not_enabled_proxy_pass_host: "{{ '127.0.0.1' + matrix_prometheus_node_exporter_container_http_host_bind_port_number_raw if not ':' in matrix_prometheus_node_exporter_container_http_host_bind_port else (matrix_prometheus_node_exporter_container_http_host_bind_port if matrix_prometheus_node_exporter_container_http_host_bind_port.split(':')[0] != '0.0.0.0' else '') }}"
-
-matrix_prometheus_node_exporter_dashboard_urls:
-  - "https://grafana.com/api/dashboards/9628/revisions/7/download"

roles/matrix-prometheus-node-exporter/vars/main.yml

@@ -3,4 +3,3 @@
 # `matrix_prometheus_node_exporter_container_http_host_bind_port_number_raw` contains the raw port number extracted from `matrix_prometheus_node_exporter_container_http_host_bind_port`,
 # which can contain values like this: ('1234', '127.0.0.1:1234', '0.0.0.0:1234')
 matrix_prometheus_node_exporter_container_http_host_bind_port_number_raw: "{{ '' if matrix_prometheus_node_exporter_container_http_host_bind_port == '' else (matrix_prometheus_node_exporter_container_http_host_bind_port.split(':')[1] if ':' in matrix_prometheus_node_exporter_container_http_host_bind_port else matrix_prometheus_node_exporter_container_http_host_bind_port) }}"
-