Fix dxViewer build for latesst MSVC

- recent MSVC versions attempt to compile files with hlsl
  extensions when passed on the command-line. This breaks
  the build because these files are not meant to be compiled
  directly by MSVC. I removed the dependency from the
  CMakeList to prevent this from happening.

examples/dxViewer/CMakeLists.txt

@@ -49,7 +49,6 @@ include_directories("${CMAKE_CURRENT_BINARY_DIR}")
 
 _add_possibly_cuda_executable(dxViewer WIN32
     "${SOURCE_FILES}"
-    "${SHADER_FILES}"
     "${INC_FILES}"
     $<TARGET_OBJECTS:regression_common_obj>
     $<TARGET_OBJECTS:regression_vtr_utils_obj>