Remove duplicate id_hash call from #record_hash

Author: Zino

lib/fast_jsonapi/serialization_core.rb

@@ -86,7 +86,6 @@ def relationships_hash(record, relationships = nil)
       def record_hash(record, params = {})
         if cached
           record_hash = Rails.cache.fetch(record.cache_key, expires_in: cache_length, race_condition_ttl: race_condition_ttl) do
-            temp_hash = id_hash(id_from_record(record), record_type) || { id: nil, type: record_type }
             temp_hash = id_hash(id_from_record(record), record_type, true)
             temp_hash[:attributes] = attributes_hash(record, params) if attributes_to_serialize.present?
             temp_hash[:relationships] = {}