clean useless check code in auc_op (#13023)

Author: jacquesqiao

paddle/fluid/operators/auc_op.h

@@ -60,20 +60,6 @@ class AucKernel : public framework::OpKernel<T> {
     const T* inference_data = predict->data<T>();
     const auto* label_data = label->data<int64_t>();
 
-    // check if states are inited.
-    auto* tp_in = ctx.Input<Tensor>("TP");
-    auto* fp_in = ctx.Input<Tensor>("FP");
-    auto* tn_in = ctx.Input<Tensor>("TN");
-    auto* fn_in = ctx.Input<Tensor>("FN");
-    PADDLE_ENFORCE(tp_in->IsInitialized(), "true_positive is not inited!");
-    PADDLE_ENFORCE(fp_in->IsInitialized(), "false_negative is not inited!");
-    PADDLE_ENFORCE(tn_in->IsInitialized(), "true_negative is not inited!");
-    PADDLE_ENFORCE(fn_in->IsInitialized(), "false_positive is not inited!");
-    PADDLE_ENFORCE_EQ(tp_in->numel(), num_thresholds, "");
-    PADDLE_ENFORCE_EQ(fp_in->numel(), num_thresholds, "");
-    PADDLE_ENFORCE_EQ(tn_in->numel(), num_thresholds, "");
-    PADDLE_ENFORCE_EQ(fn_in->numel(), num_thresholds, "");
-
     auto* tp_data = true_positive->mutable_data<int64_t>(ctx.GetPlace());
     auto* fn_data = false_negative->mutable_data<int64_t>(ctx.GetPlace());
     auto* tn_data = true_negative->mutable_data<int64_t>(ctx.GetPlace());