AsyncioEventLoop: always die with SIGTERM in exception handler (bug 705910)

Remove call to pdb.set_trace() in exception handler, since it's
not very useful, and always die with a SIGTERM for unexpected
exceptions here.

Bug: https://bugs.gentoo.org/705910
Signed-off-by: Zac Medico <zmedico@gentoo.org>
1 file changed