block: deadline: Optimize for non-rotational

Change-Id: Ib225a03691c7cc6430d7017d64a81617b594a40f
block: Disable IO Stats

* I see no need to have this enabled.  Will test to verify that it is not needed.

Change-Id: I1d79d6eea8e2ff60b3d6b4f96d187a1d1863fa98
Signed-off-by: Chester Kener <Cl3Kener@gmail.com>