removed extraneous migrate files

db/migrate/20121025234111_add_permission_to_item.rb

@@ -1,10 +0,0 @@
-class AddPermissionToItem < ActiveRecord::Migration
-  def self.up
-    add_column :items, :permission, :text
-    Item.update_all ["permission = ?", "commons"]
-  end
-
-  def self.down
-    remove_column :items, :permission
-  end
-end

db/migrate/20121025234344_add_permission_to_synapse.rb

@@ -1,13 +0,0 @@
-class AddPermissionToSynapse < ActiveRecord::Migration
-  def self.up
-    add_column :synapses, :permission, :text
-    add_column :synapses, :weight, :text
-    Synapse.update_all ["permission = ?", "commons"]
-    Synapse.update_all ["weight = ?", "5"]
-  end
-
-  def self.down
-    remove_column :synapses, :permission
-    remove_column :synapses, :weight
-  end
-end