Revert "cpuidle, intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE *again*"

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2203523
Tested: Verified resolved on dell-pr5820-01.dell2.lab.eng.bos.redhat.com

Commit 48d843dd results in the following warning on some systems with debug x86 kernels:

[ 9.114162] WARNING: CPU: 1 PID: 0 at kernel/sched/clock.c:397 sched_clock_tick+0xfa/0x150

Revert it for now, until a better solution is determined.

Signed-off-by: David Arcari darcari@redhat.com