Remove IP matching from e-mail domain blocks (#18190)

Clear out e-mail domain blocks created from automatically resolved DNS records

db/migrate/20180615122121_add_autofollow_to_invites.rb

@@ -5,7 +5,7 @@ class AddAutofollowToInvites < ActiveRecord::Migration[5.2]
 
   disable_ddl_transaction!
 
-  def change
+  def up
     safety_assured do
       add_column_with_default :invites, :autofollow, :bool, default: false, allow_null: false
     end