docs/manual: remove references to largefile

Switch from the ACL package example to RRDTOOL since ACL has no dual
(depends + select) dependencies any more and doesn't fit the example
scenario.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>