remove coefficient trimming from WaveletPacket classes
remove coefficient trimming from WaveletPacket classes

trimming is now done at the Node level, so this is redundant.

grlee77/pywt,rgommers/pywt,grlee77/pywt,rgommers/pywt,PyWavelets/pywt,PyWavelets/pywt,rgommers/pywt,rgommers/pywt