power: step-chg-jeita: Remove hysteresis for OCV based step-chg

Remove hysteresis for OCV based step charging as battery OCV is
a stable parameter of battery and doesn't fluctuate with
variation in current.

Change-Id: I23d92b05c3e34fa7d9d3a1d0abaac7863213e71a
Signed-off-by: Ashish Chavan <ashichav@codeaurora.org>