Removed unnecessary "refresh()" method.
Removed unnecessary "refresh()" method.

aashish24/tangelo,mathstuf/tangelo,aashish24/tangelo,Kitware/tangelo,ecohealthalliance/tangelo,ecohealthalliance/tangelo,Kitware/tangelo,ecohealthalliance/tangelo,Kitware/tangelo,mathstuf/tangelo,mathstuf/tangelo,aashish24/tangelo