Revert "mm/damon/Kconfig: enable CONFIG_DAMON by default"

This reverts commit 28615e6e.

No, we don't make random features default to being on.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: SeongJae Park <sj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>