Removing legacy code [skip ci]

bob/learn/tensorflow/analyzers/ExperimentAnalizer.py

bob/learn/tensorflow/analyzers/SoftmaxAnalizer.py

bob/learn/tensorflow/analyzers/__init__.py

bob/learn/tensorflow/datashuffler/Base.py

bob/learn/tensorflow/datashuffler/Disk.py

bob/learn/tensorflow/datashuffler/DiskAudio.py

bob/learn/tensorflow/datashuffler/ImageAugmentation.py

bob/learn/tensorflow/datashuffler/Memory.py

bob/learn/tensorflow/datashuffler/Normalizer.py

bob/learn/tensorflow/datashuffler/OnlineSampling.py

bob/learn/tensorflow/datashuffler/Siamese.py

bob/learn/tensorflow/datashuffler/SiameseDisk.py

bob/learn/tensorflow/datashuffler/SiameseMemory.py

bob/learn/tensorflow/datashuffler/TFRecord.py

bob/learn/tensorflow/datashuffler/TFRecordImage.py

bob/learn/tensorflow/datashuffler/Triplet.py

bob/learn/tensorflow/datashuffler/TripletDisk.py

bob/learn/tensorflow/datashuffler/TripletMemory.py

...n/tensorflow/datashuffler/TripletWithFastSelectionDisk.py

...learn/tensorflow/datashuffler/TripletWithSelectionDisk.py