Remove load_target for PaperTrail::Model#record_destroy

With this line, when object destroyed and version was createdPaper Trail load associated version. It's bring
useless query to DB.

lib/paper_trail/has_paper_trail.rb

@@ -483,7 +483,6 @@ def record_destroy
           end
           version = self.class.paper_trail_version_class.create(merge_metadata(data))
           send("#{self.class.version_association_name}=", version)
-          send(self.class.versions_association_name).send :load_target
           update_transaction_id(version)
           save_associations(version)
         end

test/paper_trail_test.rb

@@ -36,4 +36,20 @@ class PaperTrailTest < ActiveSupport::TestCase
     versions_for_widget = PaperTrail::Version.with_item_keys("Widget", widget.id)
     assert_equal 2, versions_for_widget.length
   end
+
+  context "destroy" do
+    setup do
+      @widget = Widget.create
+      association = @widget.send(@widget.class.versions_association_name)
+      association.define_singleton_method(:load_target) do
+        raise "#{association.class}#load_traget was called"
+      end
+    end
+
+    should 'not call PaperTrail::Version::ActiveRecord_Associations_CollectionProxy#load_target' do
+      assert_nothing_raised do
+        @widget.destroy
+      end
+    end
+  end
 end