ENH: Remove Qt Dependency from vtkMRMLAnnotationLogic

Following r22229, TemporaryPath can be accessible from MRML logics, the
Qt dependency code can now be removed from vtkMRMLAnnotationsLogic.

Fixes #1937

From: Yuzheng Zhou <yuzheng.zhou@kitware.com>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22230 3bd1e089-480b-0410-8dfb-8563597acbee