Remove RDF.Resource.new

This isn't used currently in the library. It also invites misusage as
it obfuscates the actually intended usage of RDF.Resource.Generators.

lib/rdf.ex

@@ -42,7 +42,6 @@ defmodule RDF do
   """
 
   alias RDF.{
-    Resource,
     IRI,
     BlankNode,
     Literal,
@@ -193,9 +192,6 @@ defmodule RDF do
 
   def resource?(_), do: false
 
-  defdelegate resource(), to: Resource, as: :new
-  defdelegate resource(args), to: Resource, as: :new
-
   @doc """
   Checks if the given value is a RDF term.
 

lib/rdf/resource.ex

@@ -1,13 +1,9 @@
 defmodule RDF.Resource do
+  @moduledoc """
+  Shared functions over `RDF.IRI`s and `RDF.BlankNode`s.
+  """
+
   alias RDF.{IRI, BlankNode}
-  alias RDF.Resource.Generator
 
   @type t :: IRI.t() | BlankNode.t()
-
-  def generator_config do
-    Application.get_env(:rdf, :resource, generator: BlankNode)
-  end
-
-  def new(), do: generator_config() |> Generator.generate()
-  def new(value), do: generator_config() |> Generator.generate(value)
 end

test/unit/resource_test.exs

@@ -2,10 +2,4 @@ defmodule RDF.ResourceTest do
   use RDF.Test.Case
 
   doctest RDF.Resource
-
-  alias RDF.Resource
-
-  test "new/0" do
-    assert %BlankNode{} = Resource.new()
-  end
 end