Remove matrix LDAP proxy config from nginx role

roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-domain.conf.j2

@@ -129,20 +129,6 @@
 	}
 	{% endif %}
 
-    {% if matrix_ldap_registration_proxy_enabled %}
-        location _matrix/client/r0/register {
-            {% if matrix_nginx_proxy_enabled %}
-                {# Use the embedded DNS resolver in Docker containers to discover the service #}
-                resolver 127.0.0.11 valid=5s;
-                set $backend "{{ matrix_nginx_proxy_proxy_matrix_3pid_registration_addr_with_container }}";
-                proxy_pass http://$backend/register;
-            {% else %}
-                {# Generic configuration for use outside of our container setup #}
-                proxy_pass http://{{ matrix_nginx_proxy_proxy_matrix_3pid_registration_addr_sans_container }}/register;
-            {% endif %}
-        }
-    {% endif %}
-
 	{% for configuration_block in matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks %}
 		{{- configuration_block }}
 	{% endfor %}