Remove test with tolerance over whole length. Fix microsPerSampUsed assignement.
Remove test with tolerance over whole length. Fix microsPerSampUsed assignement.

Using a tolerance over a longer experiment is not sensitive enough to detect blocks where perhaps a large amount of samples are dropped and there is a small gap afterwards.

JuliaSprenger/python-neo,INM-6/python-neo,NeuralEnsemble/python-neo,apdavison/python-neo,samuelgarcia/python-neo