unregister (Merb::Slices)

    # File lib/merb-slices/module.rb, line 75
          def unregister(slice_module)
            if (slice = self[slice_module]) && self.paths.delete(module_name = slice.name)
              slice.loadable_files.each { |file| Merb::Slices::Loader.remove_classes_in_file file }
              Object.send(:remove_const, module_name)
              unless Object.const_defined?(module_name)
                Merb.logger.info!("Unregistered slice #{module_name}")
                Merb::Slices::Loader.reload_router!
              end
            end
          end