[SCL-85] Undo Task.async implementation

lib/cereal/builders/base.ex

@@ -8,7 +8,7 @@ defmodule Cereal.Builders.Base do
   @doc """
   Builds a Cereal Base struct that encapsulates the JSON that will be serialized.
 
-  Will correctly handle Scrievener pagination.
+  Will correctly handle Scrivener pagination.
   """
   @spec build(Cereal.Context.t()) :: __MODULE__.t()
   def build(context)

lib/cereal/builders/entity.ex

@@ -5,12 +5,11 @@ defmodule Cereal.Builders.Entity do
 
   def build(%{data: data} = context) when is_list(data) do
     data
-    |> Task.async_stream(fn entity ->
+    |> Enum.map(fn entity ->
       context
       |> Map.put(:data, entity)
       |> build()
     end)
-    |> Enum.map(fn {:ok, result} -> result end)
   end
 
   def build(%{serializer: serializer} = context) do

lib/cereal/formatters/attributes.ex

@@ -3,11 +3,7 @@ defmodule Cereal.Formatters.Attributes do
 
   def format(%Cereal.Builders.Base{data: data}), do: format_data(data)
 
-  defp format_data(data) when is_list(data) do
-    data
-    |> Task.async_stream(&format_data(&1))
-    |> Enum.map(fn {:ok, result} -> result end)
-  end
+  defp format_data(data) when is_list(data), do: data |> Enum.map(&format_data/1)
 
   defp format_data(%Cereal.Builders.Entity{} = entity) do
     entity.attributes