staging: iio: cdc: remove repeated word

Fix checkpatch warning:
WARNING: Possible repeated word: 'from'

Signed-off-by: David Villasana Jiménez <davidvillasana14@gmail.com>
Link: https://lore.kernel.org/r/YGo8q4R5dqgtDMlg@fedora


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>