CropTimestepsImageFilter currently resides in eMITK repository. But is potentially useful also in MITK:
/** \brief Crops timesteps at 2D+t and 3D+t images * \details The filter is able to crop timesteps in front or at the end. * Internally, a new image is created with the remaining volumes. The geometries and properties of * the input image are transferred to the output image. */