Vestigial allowances of position stream for an entity stream are removed

Author: sbellware

lib/consumer/postgres/position_store/stream_name.rb

@@ -9,7 +9,6 @@ def self.position_stream_name(stream_name, consumer_identifier: nil)
  raise Error, "Position store's stream name must be a category (Stream Name: #{stream_name})"
  end
 
- stream_id = MessageStore::StreamName.get_id(stream_name)
  entity_name = MessageStore::StreamName.get_entity_name(stream_name)
  type_list = MessageStore::StreamName.get_types(stream_name)
 
@@ -19,12 +18,9 @@ def self.position_stream_name(stream_name, consumer_identifier: nil)
  type_list << position_type
  end
 
+ stream_id = nil
  if not consumer_identifier.nil?
- if stream_id.nil?
- stream_id = consumer_identifier
- else
- stream_id = "#{stream_id}-#{consumer_identifier}"
- end
+ stream_id = consumer_identifier
  end
 
  MessageStore::StreamName.stream_name(