remove deprecated band forests
The function isl_schedule_constraints_compute_schedule was changed to
product schedule tree based schedules instead of those based on
band forests in
isl-0.14-252-g16f65efd80
(isl_schedule_constraints_compute_schedule: produce schedule tree based
schedule, Sun Jul 28 18:40:18 2013 +0200). Since then, band forests
have been effectively unused and they have been deprecated in
isl-0.14-277-g5a552c21ea (deprecate band forests,
Sun Jul 28 18:40:18 2013 +0200).
Remove them now.
Having removed band forests, there is also no longer any point
in test_padded_schedule extracting a schedule map twice as
it is no longer affected by the intermediate construction
of a band forest.
Signed-off-by: Sven Verdoolaege <sven.verdoolaege@gmail.com>