Cleanup test exemplars and fix subsequent @#generate@ calls generating same values (#7613).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7458 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/exemplars/enabled_module_exemplar.rb

@@ -1,10 +1,4 @@
 class EnabledModule < ActiveRecord::Base
-  generator_for :name, :method => :next_name
-
-  def self.next_name
-    @last_name ||= 'module_001'
-    @last_name.succ!
-    @last_name
-  end
+  generator_for :name, :start => 'module_001'
 
 end