fluid clean: remove dygraph_utils._append_bias_in_dygraph (#51021)

* fluid clean: remove dygraph_utils._append_bias_in_dygraph

* fix func name and imports

python/paddle/distributed/fleet/layers/mpu/mp_ops.py

@@ -14,12 +14,12 @@
 
 import paddle
 from paddle import _legacy_C_ops
-from paddle.common_ops_import import dygraph_utils
 from paddle.distributed import collective
 from paddle.fluid import core
 from paddle.fluid.data_feeder import check_dtype, check_variable_and_dtype
 from paddle.framework import LayerHelper, _varbase_creator, in_dygraph_mode
 from paddle.nn import Layer
+from paddle.nn.utils import dygraph_utils
 
 from ....communication.reduce import ReduceOp, _get_reduce_op
 

python/paddle/fluid/dygraph_utils.py

@@ -12,9 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from . import core
-from .framework import dygraph_only, in_dygraph_mode
-from paddle import _C_ops, _legacy_C_ops
+from .framework import dygraph_only
+from paddle import _legacy_C_ops
 
 
 @dygraph_only
@@ -42,23 +41,3 @@ def _append_activation_in_dygraph(
 
     act_op = getattr(_legacy_C_ops, act)
     return act_op(input, *attrs)
-
-
-@dygraph_only
-def _append_bias_in_dygraph(input, bias=None, axis=1, use_mkldnn=False):
-    """Append bias operation in dygraph mode.
-
-        Args:
-            input: the input variable.
-            bias:  the bias to be appended
-            axis:  the axis to perform operation
-            use_mkldnn: whether to use mkldnn
-
-    Return the Variable after bias operation
-    """
-    if bias is None:
-        return input
-
-    return _legacy_C_ops.elementwise_add(
-        input, bias, 'axis', axis, 'use_mkldnn', use_mkldnn
-    )

python/paddle/nn/utils/dygraph_utils.py

+# Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from paddle import _legacy_C_ops
+from paddle.framework import dygraph_only
+
+
+@dygraph_only
+def _append_bias_in_dygraph(input, bias=None, axis=1, use_mkldnn=False):
+    """Append bias operation in dygraph mode.
+
+        Args:
+            input: the input variable.
+            bias:  the bias to be appended
+            axis:  the axis to perform operation
+            use_mkldnn: whether to use mkldnn
+
+    Return the Variable after bias operation
+    """
+    if bias is None:
+        return input
+
+    return _legacy_C_ops.elementwise_add(
+        input, bias, 'axis', axis, 'use_mkldnn', use_mkldnn
+    )