Remove leftover Synapse metrics code for integrating with matrix-nginx-proxy

roles/custom/matrix-synapse/tasks/init.yml

@@ -11,48 +11,3 @@
   loop_control:
     loop_var: matrix_synapse_worker_details
   when: matrix_synapse_workers_enabled | bool
-
-- when: matrix_synapse_metrics_proxying_enabled | bool
-  block:
-    - name: Fail if matrix-nginx-proxy role already executed
-      ansible.builtin.fail:
-        msg: >-
-          Trying to append Synapse's reverse-proxying configuration to matrix-nginx-proxy,
-          but it's pointless since the matrix-nginx-proxy role had already executed.
-          To fix this, please change the order of roles in your playbook,
-          so that the matrix-nginx-proxy role would run after the matrix-synapse role.
-      when: matrix_nginx_proxy_role_executed | default(False) | bool
-
-    - name: Generate synapse metrics proxying configuration for matrix-nginx-proxy (matrix.DOMAIN/metrics/synapse/main-process)
-      ansible.builtin.set_fact:
-        matrix_synapse_nginx_metrics_configuration_block: |
-          location /metrics/synapse/main-process {
-            {% if matrix_nginx_proxy_enabled | default(False) %}
-              {# Use the embedded DNS resolver in Docker containers to discover the service #}
-              resolver 127.0.0.11 valid=5s;
-              set $backend "matrix-synapse:{{ matrix_synapse_metrics_port }}";
-              proxy_pass http://$backend/_synapse/metrics;
-            {% else %}
-              {# Generic configuration for use outside of our container setup #}
-              proxy_pass http://127.0.0.1:{{ matrix_synapse_metrics_port }}/_synapse/metrics;
-            {% endif %}
-          }
-
-# Injection code was here
-
-    - name: Generate synapse worker metrics proxying configuration for matrix-nginx-proxy (matrix.DOMAIN/metrics/synapse/worker)
-      ansible.builtin.set_fact:
-        matrix_synapse_worker_nginx_metrics_configuration_block: |
-          {% for worker in matrix_synapse_workers_enabled_list %}
-          {% if worker.metrics_port != 0 %}
-          location /metrics/synapse/worker/{{ worker.id }} {
-            resolver 127.0.0.11 valid=5s;
-            set $backend "{{ worker.name }}:{{ worker.metrics_port }}";
-            proxy_pass http://$backend/_synapse/metrics;
-            proxy_set_header Host $host;
-          }
-          {% endif %}
-          {% endfor %}
-      when: matrix_synapse_workers_enabled_list | length > 0
-
-# Injection code was here