Hide ActiveRecord's create_table messages

This should mean less noise in the test, and if we follow this example
going foward when adding Sequel and Mongoid models the test output
should be relevant only to the tests being run.

Author: ellnix

spec/support/active_record_schema.rb

@@ -26,3 +26,5 @@
 def ar_schema
   @ar_schema ||= ActiveRecord::Schema.new
 end
+
+ar_schema.verbose = false