remove old workers.yml (already saved into main.yml)

roles/custom/matrix-synapse/vars/main.yml

@@ -113,6 +113,7 @@ matrix_synapse_known_instance_map_eligible_worker_types:
 
 # the following section contains semi-automatic generated content
 ### workers:start
+
 matrix_synapse_workers_generic_worker_endpoints:
   # This worker can handle API requests matching the following regular expressions.
   # These endpoints can be routed to any worker. If a worker is set up to handle a