ENH: Updating SimpleFilters internal module

This update just updates the json to those in SimpleITK v0.7rc1 and
removed filters not usable in Slicer related to ITK LabelMaps.

$ git log --oneline ceb1a6..fc1f06
fc1f06c BUG: Remove filters which take ITK LabelMap as input
016d7de Merge branch 'sitk-upstream' into update-sitk
74cbfcf SimpleITK e2ec6bbf Filter descriptions (reduced)

From: Bradley Lowekamp <blowekamp@mail.nih.gov>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22478 3bd1e089-480b-0410-8dfb-8563597acbee