diff --git a/Gemfile.lock b/Gemfile.lock
index 352d77b25..def9dba9b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,6 +98,7 @@ GEM
     connection_pool (2.2.2)
     crass (1.0.4)
     diff-lcs (1.3)
+    diffy (3.3.0)
     elasticsearch (7.2.0)
       elasticsearch-api (= 7.2.0)
       elasticsearch-transport (= 7.2.0)
@@ -368,6 +369,7 @@ DEPENDENCIES
   byebug
   capybara (>= 2.15, < 4.0)
   chromedriver-helper
+  diffy
   enumerize
   faraday (~> 0.15.4)
   font-awesome-sass (= 4.7.0)
diff --git a/db/migrate/20190930010405_resort_portal_image_data.rb b/db/migrate/20190930010405_resort_portal_image_data.rb
deleted file mode 100644
index 665b48466..000000000
--- a/db/migrate/20190930010405_resort_portal_image_data.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-class ResortPortalImageData < ActiveRecord::Migration[5.2]
-  def change
-    PortalImage.order(position: :asc).each_with_index do |image, index|
-      image.update!(position: index + 1)
-    end
-  end
-end