ia64: drop large results from libm-test-ulps [BZ #16401]

We don't want to record these test results as a good thing.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
ia64: regen libm-test-ulps from scratch

Truncate the file first so as to delete old entries and to lower ULPs
for tests that have improved.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>