package/ola: drop autoreconf

OLA_AUTORECONF has been set since re-introduction of package in commit
16ff9484 but it is not needed as no
patches are touching Makefile.am or ola.m4 anymore

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>