Also remove the duplicated unit test template. References #7222.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6841 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/lib/rails_generator/generators/components/scaffold/templates/unit_test.rb

-require File.dirname(__FILE__) + '<%= '/..' * class_nesting_depth %>/../test_helper'
-
-class <%= class_name %>Test < Test::Unit::TestCase
-  fixtures :<%= table_name %>
-
-  # Replace this with your real tests.
-  def test_truth
-    assert true
-  end
-end