Remove unused local vars

Author: spastorino

lib/thor/actions/directory.rb

@@ -89,9 +89,9 @@ def execute!
               next if dirname == given_destination
               base.empty_directory(dirname, config)
             when /#{TEMPLATE_EXTNAME}$/
-              destination = base.template(file_source, file_destination[0..-4], config, &@block)
+              base.template(file_source, file_destination[0..-4], config, &@block)
             else
-              destination = base.copy_file(file_source, file_destination, config, &@block)
+              base.copy_file(file_source, file_destination, config, &@block)
             end
           end
         end