[MISC] replace c10::optional with std::optional (vllm-project#25602)

Signed-off-by: Shiyan Deng <dsy842974287@meta.com>

Author: 842974287

csrc/rocm/ops.h

@@ -6,11 +6,11 @@ torch::Tensor LLMM1(at::Tensor& in_a, at::Tensor& in_b,
                     const int64_t rows_per_block);
 
 torch::Tensor wvSplitK(const at::Tensor& in_a, const at::Tensor& in_b,
-                       const c10::optional<at::Tensor>& in_bias,
+                       const std::optional<at::Tensor>& in_bias,
                        const int64_t CuCount);
 
 void wvSplitKQ(const at::Tensor& in_a, const at::Tensor& in_b,
-               const c10::optional<at::Tensor>& in_bias, at::Tensor& out_c,
+               const std::optional<at::Tensor>& in_bias, at::Tensor& out_c,
                const at::Tensor& scale_a, const at::Tensor& scale_b,
                const int64_t CuCount);
 

csrc/rocm/skinny_gemms.cu

@@ -1271,7 +1271,7 @@ int mindiv(int N, int div1, int div2) {
 }
 
 torch::Tensor wvSplitK(const at::Tensor& in_a, const at::Tensor& in_b,
-                       const c10::optional<at::Tensor>& in_bias,
+                       const std::optional<at::Tensor>& in_bias,
                        const int64_t CuCount) {
   auto M_in = in_a.size(0);
   auto K_in = in_a.size(1);
@@ -1729,7 +1729,7 @@ __global__ void wvSplitKQ_hf_(const int K, const int Kp, const int M,
 #endif  // defined(__HIP__MI3XX__) TODO: Add NAVI support
 
 void wvSplitKQ(const at::Tensor& in_a, const at::Tensor& in_b,
-               const c10::optional<at::Tensor>& in_bias, at::Tensor& out_c,
+               const std::optional<at::Tensor>& in_bias, at::Tensor& out_c,
                const at::Tensor& scale_a, const at::Tensor& scale_b,
                const int64_t CuCount) {
   static c10::ScalarType kFp8Type = is_fp8_ocp()