Remove unnecessary distinct from query in Resource::find_fragments

Author: tommy-russoniello

lib/jsonapi/active_relation_resource_finder.rb

@@ -149,7 +149,7 @@ def find_fragments(filters, options = {})
         end
 
         fragments = {}
-        rows = records.distinct.pluck(*pluck_fields)
+        rows = records.pluck(*pluck_fields)
         rows.collect do |row|
           rid = JSONAPI::ResourceIdentity.new(resource_klass, pluck_fields.length == 1 ? row : row[0])
 
@@ -777,4 +777,4 @@ def apply_filter(records, filter, value, options = {})
       end
     end
   end
-end
+end