Mathias Lechner

Results 3 issues of Mathias Lechner

Make sure non-existing synapses are not included in the export

Maybe according to the tensorflow_model_optimization library [tfmot](https://www.tensorflow.org/model_optimization/guide/pruning/comprehensive_guide.md#prune_custom_keras_layer_or_modify_parts_of_layer_to_prune)