Remove deprecated ServletContextFactoryBean bean definition.

This functionality is now built-in to Spring; keeping ServletContextFactoryBean in place inhibits loading under recent AspectJ versions with certain servlet containers.
Merge pull request #79 from OneBusAway/fix-deprecated-servletcontextfactorybean

Remove deprecated ServletContextFactoryBean bean definition.
Merge branch 'master' of https://github.com/OneBusAway/onebusaway-application-modules into develop