path /myServletPath/* and /VAADIN/* - opened my app. why?

hi.
i created little app.

added to web.xml

<url-pattern>/VAADIN/*</url-pattern> <url-pattern>/myServletPath/*</url-pattern> </servlet-mapping> when i opened in browser

127.0.0.1/myServletPath/
or
127.0.0.1/VAADIN

its opened my web app. how delete app under /VAADIN?

thanks

anybody help? its really bug.