[v1.x] fix mx2onnx wheel (#20157)

* move _op_translation files

* fix header checker path

* Update _op_translations_opset13.py

* fix

* fix

python/mxnet/onnx/mx2onnx/_op_translations/__init__.py

@@ -0,0 +1,22 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+
+# coding: utf-8
+"""ONNX export op translation"""
+
+from . import _op_translations_opset12
+from . import _op_translations_opset13

python/mxnet/onnx/mx2onnx/_op_translations/_op_translations_opset13.py

@@ -1282,7 +1282,7 @@ def convert_slice_channel(node, **kwargs):
     squeeze_axis = attrs.get('squeeze_axis', 'False')
 
     create_tensor([axis], name+'_axis', kwargs['initializer'])
-    
+
     nodes = []
     if squeeze_axis in ['True', '1']:
         nodes += [

tools/license_header.py

@@ -124,7 +124,6 @@
 
                # Dual-Licensed under Apache 2.0 and Nvidia BSD-3
                'python/mxnet/onnx/mx2onnx/_export_onnx.py',
-               'python/mxnet/onnx/mx2onnx/_op_translations.py',
                'python/mxnet/onnx/mx2onnx/_op_translations/_op_translations_opset12.py',
                'python/mxnet/onnx/mx2onnx/_op_translations/_op_translations_opset13.py',