Drop i386/x86-64 IPI fix on shutdown. Andi finds it too risky, and Eric

shows simple userspace workaround.

diff --git a/review/i386-x86-64-don-t-ipi-to-offline-cpus-on-shutdown.patch b/rejects/i386-x86-64-don-t-ipi-to-offline-cpus-on-shutdown.patch
similarity index 100%
rename from review/i386-x86-64-don-t-ipi-to-offline-cpus-on-shutdown.patch
rename to rejects/i386-x86-64-don-t-ipi-to-offline-cpus-on-shutdown.patch