Revert "display: evita: increase refx100 to reduce refresh line appearance"

This reverts commit 6097dff9d538ab4ef7d0a8747dfcd1f1fca09404.
evita: increase refx for more butter
Inspired from the CM and AOKP commits.
Offers fluid graphics, smooth scrolling and no GPU tearing.

Change-Id: I739e810bd7b05f6c22d948e26e6a880f80f35296