Drop netpbm-cmuwtopbm.patch because of an out-of-bounds stack write.
This is correctly reported by GCC 14 as a type error.
It looks like the issue was fixed upstream by adding an (uint32_t)
cast to the magic number check a few lines below (not shown in
the patch added in commit 7d3e28cc83 downsteam).
Also stub out converter/other/jpeg2000/libjasper_compat.c because
it is broken. Fixes another GCC 14 compatibility issue.
