Upgrade synapse-admin (0.8.6 -> 0.8.7) and drop reverse-proxy workaround

Related to 6a31fba346, 6a31fba346.

Related to https://github.com/Awesome-Technologies/synapse-admin/issues/322

roles/custom/matrix-synapse-admin/defaults/main.yml

@@ -9,7 +9,7 @@ matrix_synapse_admin_container_image_self_build_repo: "https://github.com/Awesom
 
 matrix_synapse_admin_docker_src_files_path: "{{ matrix_base_data_path }}/synapse-admin/docker-src"
 
-matrix_synapse_admin_version: 0.8.6
+matrix_synapse_admin_version: 0.8.7
 matrix_synapse_admin_docker_image: "{{ matrix_synapse_admin_docker_image_name_prefix }}awesometechnologies/synapse-admin:{{ matrix_synapse_admin_version }}"
 matrix_synapse_admin_docker_image_name_prefix: "{{ 'localhost/' if matrix_synapse_admin_container_image_self_build else matrix_container_global_registry_prefix }}"
 matrix_synapse_admin_docker_image_force_pull: "{{ matrix_synapse_admin_docker_image.endswith(':latest') }}"

roles/custom/matrix-synapse-admin/tasks/inject_into_nginx_proxy.yml

@@ -24,15 +24,6 @@
         {# Generic configuration for use outside of our container setup #}
         proxy_pass http://127.0.0.1:8766/$1;
       {% endif %}
-
-        {#
-          Workaround synapse-admin serving all assets at /static.
-          See: https://github.com/Awesome-Technologies/synapse-admin/issues/322
-        #}
-        sub_filter_once off;
-        sub_filter "/static/" "{{ matrix_synapse_admin_public_endpoint }}/static/";
-        sub_filter "/favicon.ico" "{{ matrix_synapse_admin_public_endpoint }}/favicon.ico";
-        sub_filter "/manifest.json" "{{ matrix_synapse_admin_public_endpoint }}/manifest.json";
       }
 
 - name: Register Synapse Admin proxying configuration with matrix-nginx-proxy