fix for thymeleaf-spring#72
fix for thymeleaf-spring#72

remove unused import
Merge pull request #73 from pjentsch/2.1-master

proposed fix for https://github.com/thymeleaf/thymeleaf-spring/issues/72
Applied #73 to thymeleaf-spring4, minor code style modifications.
Merge branch '2.1-dev' into 3.0-dev