Removed the now defunced Linked#List along with tests

lib/linked.rb

@@ -4,7 +4,5 @@
 require 'linked/list'
 
 module Linked
-  def self.List(object)
 
-  end
 end

test/linked_test.rb

@@ -1,14 +1,9 @@
 require 'test_helper'
 
 describe Linked do
-  it 'has a version number' do
-    refute_nil ::Linked::VERSION
-  end
+  subject { ::Linked }
 
-  describe '#List' do
-    it 'returns the list back when given one'
-    it 'inserts one or more Items into a new list'
-    it 'converts an array to a List'
-    it 'wraps an arbitrary object in a single Item in a new List'
+  it 'has a version number' do
+    refute_nil subject::VERSION
   end
 end

test/list_test.rb

@@ -1,9 +1,5 @@
 require 'test_helper'
 
-class ListLike
-  include Linked::List
-end
-
 describe Linked::List do
   subject { ListLike }
 

test/test_helper.rb

@@ -5,3 +5,7 @@
 require 'linked'
 
 require 'minitest/autorun'
+
+class ListLike
+  include Linked::List
+end