Strip refs to determinism through and through

Author: gonidelis

cub/cub/device/device_merge.cuh

@@ -17,7 +17,6 @@
 #include <cub/device/dispatch/dispatch_merge.cuh>
 #include <cub/util_namespace.cuh>
 
-#include <cuda/__execution/determinism.h>
 #include <cuda/__execution/require.h>
 #include <cuda/std/__functional/operations.h>
 #include <cuda/std/cstdint>
@@ -193,15 +192,6 @@ struct DeviceMerge
   {
     _CCCL_NVTX_RANGE_SCOPE("cub::DeviceMerge::MergeKeys");
 
-    using requirements_t = ::cuda::std::execution::
-      __query_result_or_t<EnvT, ::cuda::execution::__get_requirements_t, ::cuda::std::execution::env<>>;
-    using requested_determinism_t =
-      ::cuda::std::execution::__query_result_or_t<requirements_t,
-                                                  ::cuda::execution::determinism::__get_determinism_t,
-                                                  ::cuda::execution::determinism::run_to_run_t>;
-    static_assert(!::cuda::std::is_same_v<requested_determinism_t, ::cuda::execution::determinism::gpu_to_gpu_t>,
-                  "gpu_to_gpu determinism is not supported for unstable device merge");
-
     return detail::dispatch_with_env(
       env, [&]([[maybe_unused]] auto tuning, void* d_temp_storage, size_t& temp_storage_bytes, cudaStream_t stream) {
         return detail::merge::dispatch(
@@ -423,15 +413,6 @@ struct DeviceMerge
   {
     _CCCL_NVTX_RANGE_SCOPE("cub::DeviceMerge::MergePairs");
 
-    using requirements_t = ::cuda::std::execution::
-      __query_result_or_t<EnvT, ::cuda::execution::__get_requirements_t, ::cuda::std::execution::env<>>;
-    using requested_determinism_t =
-      ::cuda::std::execution::__query_result_or_t<requirements_t,
-                                                  ::cuda::execution::determinism::__get_determinism_t,
-                                                  ::cuda::execution::determinism::run_to_run_t>;
-    static_assert(!::cuda::std::is_same_v<requested_determinism_t, ::cuda::execution::determinism::gpu_to_gpu_t>,
-                  "gpu_to_gpu determinism is not supported for unstable device merge");
-
     return detail::dispatch_with_env(
       env, [&]([[maybe_unused]] auto tuning, void* d_temp_storage, size_t& temp_storage_bytes, cudaStream_t stream) {
         return detail::merge::dispatch(