don't need sequenced

Gemfile

@@ -19,7 +19,6 @@ gem 'uservoice-ruby'
 gem 'dotenv'
 gem 'snorlax'
 gem 'httparty'
-gem 'sequenced', '~> 2.0.0'
 gem 'active_model_serializers', '~> 0.8.1'
 gem 'delayed_job', '~> 4.0.2'
 gem 'delayed_job_active_record', '~> 4.0.1'

app/models/event.rb

@@ -6,7 +6,6 @@ class Event < ActiveRecord::Base
   belongs_to :map
   belongs_to :user
 
-  scope :sequenced, -> { where('sequence_id is not null').order('sequence_id asc') }
   scope :chronologically, -> { order('created_at asc') }
 
   after_create :notify_webhooks!, if: :map
@@ -14,8 +13,6 @@ class Event < ActiveRecord::Base
   validates_inclusion_of :kind, :in => KINDS
   validates_presence_of :eventable
 
-  acts_as_sequenced scope: :map_id, column: :sequence_id, skip: lambda {|e| e.map.nil? || e.map_id.nil? }
-
   #def notify!(user)
   #  notifications.create!(user: user)
   #end

db/migrate/20160312234946_create_events.rb

@@ -5,9 +5,7 @@ class CreateEvents < ActiveRecord::Migration
       t.references  :eventable, polymorphic: true, index: true
       t.references  :user, index: true
       t.references  :map, index: true
-      t.integer     :sequence_id, index: true, default: nil, null: true
       t.timestamps
     end
-    add_index :events, [:map_id, :sequence_id], unique: true
   end
 end