The presence of duplicate import lines appears to be a typo.
Removing them.

Link: https://lore.kernel.org/r/20230906155703.3917918-1-alessandro.carminati@gmail.com

Fixes: 24bce201 ("tools/rv: Add dot2k")
Signed-off-by: Alessandro Carminati (Red Hat) <alessandro.carminati@gmail.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>