message: Minor CMakeLists update.
diff: @@ -20,8 +20,7 @@ if(BUILD_GPU)
  set(CMAKE_CUDA_STANDARD_REQUIRED true)
  set(CMAKE_CUDA_STANDARD 11)
  if (CMAKE_CUDA_COMPILER_VERSION VERSION_GREATER_EQUAL 9)
  - set(CMAKE_CUDA_FLAGS "-Wno-deprecated-declarations
  - --expt-relaxed-constexpr ${CMAKE_CUDA_FLAGS}"
  + set(CMAKE_CUDA_FLAGS "-Wno-deprecated-declarations ${CMAKE_CUDA_FLAGS}"
  CACHE string "")
  endif()
  if(CMAKE_CUDA_COMPILER_VERSION VERSION_LESS 9)
  