Revert "CHROMIUM: mm: multigenerational lru: enable by default"

This reverts commit 0efad8fa.

BUG=b:265245396
TEST=Confirm that the kernel can be successfully built

Change-Id: I076786b70c9db9ae0fa59f6712d0ce10822048ef
Signed-off-by: Koki Ryu <kokiryu@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4199123


Reviewed-by: Suleiman Souhlal <suleiman@chromium.org>
Tested-by: Koki Ryu <kokiryu@chromium.org>
Commit-Queue: Koki Ryu <kokiryu@chromium.org>
Signed-off-by: Richard Fung <richardfung@google.com>