remove top level klass method in rake task

lib/tasks/geocoder.rake

-def klass
-  class_name = ENV['CLASS'] || ENV['class']
-  raise "Please specify a CLASS (model)" unless class_name
-  Object.const_get(class_name)
-end
-
 namespace :geocode do
-
   desc "Geocode all objects without coordinates."
   task :all => :environment do
+    class_name = ENV['CLASS'] || ENV['class']
+    raise "Please specify a CLASS (model)" unless class_name
+    klass = Object.const_get(class_name)
+
     klass.not_geocoded.each do |obj|
       obj.geocode; obj.save
     end