[Refactor] Remove dead cutlass mxfp8 code

CMakeLists.txt

@@ -363,35 +363,6 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
     SRCS "${VLLM_EXT_SRC}"
     CUDA_ARCHS "${CUDA_ARCHS}")
 
-  # Expert-specialization MXFP8 blockscaled grouped kernels (SM100+).
-  if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 13.0)
-    cuda_archs_loose_intersection(ES_MXFP8_GROUPED_MM_ARCHS "10.0f;11.0f" "${CUDA_ARCHS}")
-  else()
-    cuda_archs_loose_intersection(ES_MXFP8_GROUPED_MM_ARCHS "10.0a;10.1a;10.3a" "${CUDA_ARCHS}")
-  endif()
-  if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.8 AND ES_MXFP8_GROUPED_MM_ARCHS)
-    set(ES_MXFP8_GROUPED_MM_SRCS
-      "csrc/libtorch_stable/moe/mxfp8_moe/cutlass_mxfp8_grouped_mm.cu"
-      "csrc/libtorch_stable/moe/mxfp8_moe/mxfp8_experts_quant.cu")
-    set_gencode_flags_for_srcs(
-      SRCS "${ES_MXFP8_GROUPED_MM_SRCS}"
-      CUDA_ARCHS "${ES_MXFP8_GROUPED_MM_ARCHS}")
-    list(APPEND VLLM_STABLE_EXT_SRC "${ES_MXFP8_GROUPED_MM_SRCS}")
-    list(APPEND VLLM_GPU_FLAGS "-DENABLE_ES_MXFP8_GROUPED_MM_SM100=1")
-    message(STATUS "Building ES MXFP8 grouped kernels for archs: ${ES_MXFP8_GROUPED_MM_ARCHS}")
-  else()
-    if (NOT ${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.8
-        AND ES_MXFP8_GROUPED_MM_ARCHS)
-      message(STATUS "Not building ES MXFP8 grouped kernels as CUDA Compiler version is "
-                     "not >= 12.8.")
-    else()
-      message(STATUS "Not building ES MXFP8 grouped kernels as no compatible archs found "
-                     "in CUDA target architectures.")
-    endif()
-  endif()
-
-
-
 # if CUDA endif
 endif()