This note is no longer needed, so remove it.
Tarballs generated by GitHub are always the same, so hashes can be
checked.
This reverts commit 9474cc2594.
[Thomas: fix other remaining references to not using hashes for
github, as noticed by Maxime Hadjinlian.]
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
