change: skip managed spot training mxnet nb (aws#3273)

Author: mufaddal-rohawala

tests/scripts/run-notebook-test.sh

@@ -124,7 +124,6 @@ echo "set SAGEMAKER_ROLE_ARN=$SAGEMAKER_ROLE_ARN"
 ./amazon-sagemaker-examples/advanced_functionality/tensorflow_iris_byom/tensorflow_BYOM_iris.ipynb \
 ./amazon-sagemaker-examples/sagemaker-python-sdk/1P_kmeans_highlevel/kmeans_mnist.ipynb \
 ./amazon-sagemaker-examples/sagemaker-python-sdk/1P_kmeans_lowlevel/kmeans_mnist_lowlevel.ipynb \
-./amazon-sagemaker-examples/sagemaker-python-sdk/managed_spot_training_mxnet/managed_spot_training_mxnet.ipynb \
 ./amazon-sagemaker-examples/sagemaker-python-sdk/mxnet_gluon_sentiment/mxnet_sentiment_analysis_with_gluon.ipynb \
 ./amazon-sagemaker-examples/sagemaker-python-sdk/mxnet_onnx_export/mxnet_onnx_export.ipynb \
 ./amazon-sagemaker-examples/sagemaker-python-sdk/scikit_learn_randomforest/Sklearn_on_SageMaker_end2end.ipynb \