Remove CONFIG_TR=y from the x86 defconfigs since
token ring support is antiquated and obsolete.

( I reviewed both x86 defconfigs - I didn't come up with
  anything else that obviously should be removed. )
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Link: http://lkml.kernel.org/r/4F6D05CA.2050801@xenotime.net
[ Twiddled the changelog a bit ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>