kmod: remove unnecessary autoreconf

Commit 047fea1d removed a patch on kmod that
was the reason for autoreconfiguring kmod, but autoreconf itself was not
removed.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>