delete GetExpectedKernelType mkldnn of transpose2 (#46977)

paddle/fluid/operators/transpose_op.cc

@@ -231,14 +231,6 @@ class Transpose2Op : public TransposeOp {
       const framework::ExecutionContext &ctx) const override {
     framework::proto::VarType::Type data_type =
         OperatorWithKernel::IndicateVarDataType(ctx, "X");
-#ifdef PADDLE_WITH_MKLDNN
-    if (this->CanMKLDNNBeUsed(ctx, data_type)) {
-      return framework::OpKernelType(data_type,
-                                     ctx.GetPlace(),
-                                     framework::DataLayout::kMKLDNN,
-                                     framework::LibraryType::kMKLDNN);
-    }
-#endif
     std::string data_format = ctx.Attr<std::string>("data_format");
     framework::DataLayout layout_ = framework::StringToDataLayout(data_format);
     return framework::OpKernelType(data_type, ctx.GetPlace(), layout_);

paddle/fluid/platform/mkldnn_op_list.h

@@ -78,8 +78,7 @@ static const std::unordered_set<std::string> mkldnn_white_list = {
     "prior_box",
     "fc",
     "mul",
-    "mul_grad",
-    "transpose2"};
+    "mul_grad"};
 
 inline bool in_mkldnn_white_list(const std::string& op_name) {
   return mkldnn_white_list.find(op_name) != mkldnn_white_list.end();