Removed usage of extension description macro
Removed usage of extension description macro

Currently this is generating the following cmake error:

-- Configuring SEM CLI module: BinShrink
CMake Error at /Users/blowekamp/src/Slicer/Extensions/CMake/SlicerFunctionGenerateExtensionDescription.cmake:31 (message):
  CMake variable EXTENSION_WC_REVISION is empty !
Call Stack (most recent call first):
  CMakeLists.txt:121 (slicerFunctionGenerateExtensionDescription)

These lines should be restored when corrected.

blowekamp/Slicer-IASEM,blowekamp/Slicer-IASEM