[phi decoupling] rm gradient_accumulator in phi (#50385)

* rm gradient_accumulator in phi

* update

paddle/phi/backends/custom/custom_device_test.cc

@@ -18,8 +18,6 @@
 
 #include "paddle/fluid/framework/tensor.h"
 #include "paddle/fluid/framework/tensor_util.h"
-#include "paddle/fluid/framework/variable.h"
-#include "paddle/fluid/imperative/gradient_accumulator.h"
 #include "paddle/fluid/platform/device_context.h"
 #include "paddle/phi/backends/custom/fake_cpu_device.h"
 #include "paddle/phi/backends/device_manager.h"
@@ -240,51 +238,6 @@ void TestCustomCCL(const paddle::platform::Place& place) {
                               stream);
 }
 
-void TestBlasAPI(const paddle::platform::Place& place) {
-  std::cout << "TestBlasAPI on " << place << std::endl;
-  if (paddle::platform::is_custom_place(place) == false) {
-    return;
-  }
-  auto device = phi::DeviceManager::GetDeviceWithPlace(place);
-  phi::stream::Stream stream(place, nullptr);
-  device->BlasAXPBY<float>(stream, 0, 1., nullptr, 1., nullptr);
-
-  paddle::framework::Variable var1;
-  paddle::framework::Variable var2;
-  std::vector<float> src_data(10, 1.0);
-  std::vector<float> dst_data(10, 0.0);
-  std::vector<float> result;
-  paddle::platform::CPUPlace src_place;
-  for (unsigned int i = 0; i < 10; i++) {
-    result.emplace_back(src_data[i] + dst_data[i]);
-  }
-
-  std::vector<int64_t> dims = {2, 5};
-  auto* src = var1.GetMutable<phi::DenseTensor>();
-  auto* dst = var2.GetMutable<phi::DenseTensor>();
-  src->Resize(phi::make_ddim(dims));
-  dst->Resize(phi::make_ddim(dims));
-  auto* src_mutable = src->mutable_data<float>(place);
-  auto* dst_mutable = dst->mutable_data<float>(place);
-
-  paddle::memory::Copy(place,
-                       src_mutable,
-                       src_place,
-                       src_data.data(),
-                       sizeof(float) * src_data.size());
-
-  paddle::memory::Copy(place,
-                       dst_mutable,
-                       src_place,
-                       dst_data.data(),
-                       sizeof(float) * dst_data.size());
-
-  paddle::imperative::TensorAdd<paddle::framework::Variable>(var1, &var2);
-  phi::DenseTensor rlt;
-  paddle::platform::CPUPlace rlt_place;
-  paddle::framework::TensorCopySync(*dst, rlt_place, &rlt);
-}
-
 TEST(CustomDevice, Tensor) {
   InitDevice();
   auto dev_types = phi::DeviceManager::GetAllDeviceTypes();
@@ -299,7 +252,6 @@ TEST(CustomDevice, Tensor) {
     TestTensorShareDataWith(place);
     TestTensorUtils(place);
     TestCustomCCL(place);
-    TestBlasAPI(place);
   }
 }