zram: remove old private project comment

Remove the old private compcache project address so upcoming patches
should be sent to LKML because we Linux kernel community will take care.

Change-Id: I4099fae8e1cacfb7d9c97194008dfda540b1cb8b
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
enabled ZRAM in defconfig

Change-Id: Id846142406c31659519f2c28aeea3d392d6ab27a