clean sign op

src/ngraph/runtime/gpu/gpu_cuda_kernel_emitters.cpp

@@ -70,53 +70,6 @@ void cuda_)" + name + "(" + data_type +
                                               0));  // arguments
                 CUDA_SAFE_CALL(cuCtxSynchronize()); // Retrieve and print output.
             }
-
-            void emit_sign(void* in, void* out, size_t count)
-            {
-                std::string name = "sign";
-                // Create an instance of nvrtcProgram with the code string.
-                if (CudaFunctionPool::instance().get(name) == nullptr)
-                {
-                    const char* opts[] = {"--gpu-architecture=compute_35",
-                                          "--relocatable-device-code=true"};
-                    std::string kernel;
-                    std::string data_type("float");
-
-                    kernel = R"(
-extern "C" __global__
-void cuda_)" + name + "(" + data_type +
-                             "* in, " + data_type + "* out, size_t n)\n" + R"(
-{
-    size_t tid = blockIdx.x * blockDim.x + threadIdx.x;
-    if(tid < n)
-    {
-        out[tid] = (in[tid] > 0) - (in[tid] < 0);
-    }
-})";
-
-                    CudaFunctionPool::instance().set(
-                        name, CudaFunctionBuilder::get("cuda_" + name, kernel, 2, opts));
-                }
-
-                //convert runtime ptr to driver api ptr
-                CUdeviceptr d_ptr_in, d_ptr_out;
-                d_ptr_in = (CUdeviceptr)in;
-                d_ptr_out = (CUdeviceptr)out;
-
-                void* args_list[] = {&d_ptr_in, &d_ptr_out, &count};
-                CUDA_SAFE_CALL(cuLaunchKernel(*CudaFunctionPool::instance().get(name).get(),
-                                              count,
-                                              1,
-                                              1, // grid dim
-                                              1,
-                                              1,
-                                              1, // block dim
-                                              0,
-                                              NULL, // shared mem and stream
-                                              args_list,
-                                              0));  // arguments
-                CUDA_SAFE_CALL(cuCtxSynchronize()); // Retrieve and print output.
-            }
         }
     }
 }