sched:features: Disable Gentle Fair Sleepers

* Disabling this can improve UI responsiveness.  We'll see how it handles in N5.

Signed-off-by: Chester Kener <Cl3Kener@gmail.com>
block: Disable IO Stats

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

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