Clang: Remove unused CUDA implicit link variables

We don't use/need implicit links for Clang with CUDA.

Modules/Compiler/Clang-CUDA.cmake

@@ -22,8 +22,8 @@ set(_CMAKE_CUDA_PTX_FLAG "--cuda-device-only -S")
 set(_CMAKE_CUDA_DEVICE_CODE "-fgpu-rdc -c")
 
 # RulePlaceholderExpander expands crosscompile variables like sysroot and target only for CMAKE_<LANG>_COMPILER. Override the default.
-set(CMAKE_CUDA_LINK_EXECUTABLE "<CMAKE_CUDA_COMPILER> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>${__IMPLICT_LINKS}")
-set(CMAKE_CUDA_CREATE_SHARED_LIBRARY "<CMAKE_CUDA_COMPILER> <CMAKE_SHARED_LIBRARY_CUDA_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CUDA_FLAGS> <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>${__IMPLICT_LINKS}")
+set(CMAKE_CUDA_LINK_EXECUTABLE "<CMAKE_CUDA_COMPILER> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
+set(CMAKE_CUDA_CREATE_SHARED_LIBRARY "<CMAKE_CUDA_COMPILER> <CMAKE_SHARED_LIBRARY_CUDA_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CUDA_FLAGS> <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
 
 set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT "STATIC")
 set(CMAKE_CUDA_RUNTIME_LIBRARY_LINK_OPTIONS_STATIC "cudadevrt;cudart_static")