Don't raise in validation if there are defined-but-unused time zone components, since it's not illegal.
Don't raise in validation if there are defined-but-unused time zone components, since it's not illegal.


git-svn-id: 0c33e958600270102f91bf5868e396345dde476c@279 e27351fd-9f3e-4f54-a53b-843176b1656c

red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver