issue/342: 昆仑芯P800上random_sample算子

src/infiniop/devices/kunlun/kunlun_kernel_common.h

@@ -43,22 +43,6 @@ __device__ inline void loadsm(__shared_ptr__ const T *p, T *v, int len) {
     __builtin_memcpy(v, p, len * sizeof(T));
 }
 
-/**
- * @brief Convert data type. All data is in local memory
- * @param v: input value
- * @return output value
- */
-template <typename Tout, typename Tin>
-__device__ inline Tout to(Tin v) {
-    if constexpr (std::is_same<Tin, half>::value) {
-        return __half2float(v);
-    } else if constexpr (std::is_same<Tin, bfloat16_t>::value) {
-        return __bfloat162float(v);
-    } else {
-        return static_cast<Tout>(v);
-    }
-}
-
 /**
  * @brief atomicAdd for kunlun xpu
  * @param ptr: pointer to shared memory