remove unused and unneccesary user_id from taggings table.

this way we can stay closer to the defaults of has_many_polymorphs thus making upgrading easier

app/models/tagging.rb

@@ -5,7 +5,6 @@ class Tagging < ActiveRecord::Base
  
   belongs_to :tag
   belongs_to :taggable, :polymorphic => true
-  # belongs_to :user
   
   # If you also need to use <tt>acts_as_list</tt>, you will have to manage the tagging positions manually by creating decorated join records when you associate Tags with taggables.
   # acts_as_list :scope => :taggable

app/models/user.rb

@@ -104,8 +104,6 @@ class User < ActiveRecord::Base
            end
   has_many :notes, :order => "created_at DESC", :dependent => :delete_all
   has_one :preference, :dependent => :destroy
-  has_many :taggings
-  has_many :tags, :through => :taggings, :select => "DISTINCT tags.*"
   
   attr_protected :is_admin