Refactor employee and estimate models by removing redundant comments; update locale file to remove item references; delete unused QboItemTest file.

test/unit/qbo_item_test.rb

@@ -1,9 +0,0 @@
-require File.expand_path('../../test_helper', __FILE__)
-
-class QboItemTest < ActiveSupport::TestCase
-
-  # Replace this with your real tests.
-  def test_truth
-    assert true
-  end
-end