diff --git a/lib/paper_trail.rb b/lib/paper_trail.rb
index 7946c0ce..69bca41e 100644
--- a/lib/paper_trail.rb
+++ b/lib/paper_trail.rb
@@ -95,17 +95,7 @@ module PaperTrail
   end
 
   def self.transaction?
-    ActiveRecord::Base.connection.open_transactions > 0 || paper_trail_store[:transaction_open]
-  end
-
-  def self.start_transaction
-    paper_trail_store[:transaction_open] = true
-    self.transaction_id = nil
-  end
-
-  def self.end_transaction
-    paper_trail_store[:transaction_open] = false
-    self.transaction_id = nil
+    ActiveRecord::Base.connection.open_transactions > 0
   end
 
   def self.transaction_id
diff --git a/lib/paper_trail/version_concern.rb b/lib/paper_trail/version_concern.rb
index e9912144..dfbe8f78 100644
--- a/lib/paper_trail/version_concern.rb
+++ b/lib/paper_trail/version_concern.rb
@@ -171,10 +171,6 @@ module PaperTrail
 
         model.send "#{model.class.version_association_name}=", self
 
-        # unless options[:has_one] == false
-        #   reify_has_ones model, options[:has_one]
-        # end
-
         unless options[:has_one] == false
           reify_has_ones model, options
         end
@@ -200,15 +196,6 @@ module PaperTrail
       {}
     end
 
-    # Rollback all changes within a transaction
-    def rollback
-      transaction do
-        self.class.within_transaction(transaction_id).reverse_each do |version|
-          version.reify.save!
-        end
-      end
-    end
-
     # Returns who put the item into the state stored in this version.
     def originator
       @originator ||= previous.whodunnit rescue nil