def drop_dynamic(images):
    """Remove images which are dynamic.

    Drops all rows, in which the Description contains 'Dynamic'.

    Parameters
    ----------
    images : pd.DataFrame
        This dataframe will be modified.

    Returns
    -------
    pd.DataFrame
        All images that are not dynamic.

    """
    no_dynamic = images[~images['Description'].str.contains('Dynamic')]
    return no_dynamic
