target_package_object is already an association

Plus, @target_package_object is never used

Author: ncounter

src/api/app/models/bs_request_action_submit.rb

@@ -143,10 +143,6 @@ def short_name
     "Submit #{source_package}"
   end
 
-  def target_package_object
-    @target_package_object ||= Package.find_by_project_and_name(target_project, target_package)
-  end
-
   def creator_is_target_maintainer
     request_creator = User.find_by_login(bs_request.creator)
     request_creator.has_local_role?(Role.hashed['maintainer'], target_package_object)