delete GetKernelTypeForVar mkldnn hardcode (#47360)

paddle/fluid/operators/prelu_op.cc

@@ -38,25 +38,6 @@ class PReluOp : public framework::OperatorWithKernel {
         framework::OperatorWithKernel::IndicateVarDataType(ctx, "X");
     return framework::OpKernelType(input_data_type, ctx.GetPlace());
   }
-
-  framework::OpKernelType GetKernelTypeForVar(
-      const std::string &var_name,
-      const Tensor &tensor,
-      const framework::OpKernelType &expected_kernel_type) const override {
-#ifdef PADDLE_WITH_MKLDNN
-    // All inputs (including alpha) need shape rotating
-    if ((expected_kernel_type.data_layout_ == phi::DataLayout::kMKLDNN) &&
-        (tensor.layout() != phi::DataLayout::kMKLDNN) &&
-        paddle::platform::MKLDNNDeviceContext::tls()
-                .get_cur_paddle_data_layout() == phi::DataLayout::kNHWC) {
-      return framework::OpKernelType(expected_kernel_type.data_type_,
-                                     tensor.place(),
-                                     phi::DataLayout::kNHWC);
-    }
-#endif
-    return framework::OpKernelType(
-        expected_kernel_type.data_type_, tensor.place(), tensor.layout());
-  }
 };
 
 class PReluOpMaker : public framework::OpProtoAndCheckerMaker {
@@ -120,25 +101,6 @@ class PReluGradOp : public framework::OperatorWithKernel {
         framework::OperatorWithKernel::IndicateVarDataType(ctx, "X");
     return framework::OpKernelType(input_data_type, ctx.GetPlace());
   }
-
-  framework::OpKernelType GetKernelTypeForVar(
-      const std::string &var_name,
-      const Tensor &tensor,
-      const framework::OpKernelType &expected_kernel_type) const override {
-#ifdef PADDLE_WITH_MKLDNN
-    // All inputs (including alpha) need shape rotating
-    if ((expected_kernel_type.data_layout_ == phi::DataLayout::kMKLDNN) &&
-        (tensor.layout() != phi::DataLayout::kMKLDNN) &&
-        paddle::platform::MKLDNNDeviceContext::tls()
-                .get_cur_paddle_data_layout() == phi::DataLayout::kNHWC) {
-      return framework::OpKernelType(expected_kernel_type.data_type_,
-                                     tensor.place(),
-                                     phi::DataLayout::kNHWC);
-    }
-#endif
-    return framework::OpKernelType(
-        expected_kernel_type.data_type_, tensor.place(), tensor.layout());
-  }
 };
 
 template <typename T>