GPU HIP CMake: Remove deprecated option

Author: davidrohr

dependencies/FindO2GPU.cmake

@@ -291,9 +291,6 @@ if(ENABLE_HIP)
     set(CMAKE_HIP_FLAGS "${O2_GPU_CMAKE_CXX_FLAGS_NOSTD} ${CMAKE_HIP_FLAGS} ${GPUCA_HIP_DENORMALS_FLAGS}")
     set(CMAKE_HIP_FLAGS_${CMAKE_BUILD_TYPE_UPPER} "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}} ${CMAKE_HIP_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}")
     string(APPEND CMAKE_HIP_FLAGS " -fgpu-defer-diag -mllvm -amdgpu-enable-lower-module-lds=false -mllvm -amdgpu-function-calls=true -Wno-invalid-command-line-argument -Wno-unused-command-line-argument -Wno-invalid-constexpr -Wno-ignored-optimization-argument -Wno-unused-private-field -Wno-pass-failed ")
-    if(hip_VERSION VERSION_GREATER_EQUAL "6.0" AND NOT hip_VERSION VERSION_GREATER_EQUAL "6.2")
-      string(APPEND CMAKE_HIP_FLAGS " -mllvm -amdgpu-legacy-sgpr-spill-lowering=true") # TODO: Cleanup
-    endif()
     if(GPUCA_KERNEL_RESOURCE_USAGE_VERBOSE)
       string(APPEND CMAKE_HIP_FLAGS " -Rpass-analysis=kernel-resource-usage")
     endif()