silence AR migration noise during specs.

spec/support/active_record/schema_setup.rb

@@ -1,11 +1,13 @@
 def active_record_load_schema
-  ActiveRecord::Schema.define do
-    create_table :users, :force => true do |t|
-      t.integer :name
-    end
+  ActiveRecord::Migration.suppress_messages do
+    ActiveRecord::Schema.define do
+      create_table :users, :force => true do |t|
+        t.integer :name
+      end
 
-    create_table :agents, :id => false, :force => true do |t|
-      t.integer :name
+      create_table :agents, :id => false, :force => true do |t|
+        t.integer :name
+      end
     end
   end
 end