bandwidthd: drop this package

bandwidthd: drop this package

This package is not maintained by upstream anymore as they replace it by Ntopng 3. [1]
Upstream repository is archived and read only since February 2022 [2]

[1] https://community.nethserver.org/t/bandwidthd-for-nethserver-7/4071/18
[2] https://github.com/NethServer/bandwidthd

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>