Remove sevenzipjbinding files

[cremor]

JDownloader was recently updated to now include the new extraction library. See https://board.jdownloader.org/showthread.php?t=85431
This means that the sevenzipjbinding files should be removed from the image. Right now they are copied over the JDownloader files on each start which means that a downgrade could happen.

[PlusMinus0]

Thanks for the info, I'll look into it.