Revert "staging: prima: add option to read calibration data from HTC NVS"

This reverts commit 168042f1e21854b9b98832de884b0427b230439f.

Change-Id: I2fbac3af1695b0025a5063027062f42424820476
Merge pull request #4 from CyanogenMod/cm-11.0

Revert "staging: prima: add option to read calibration data from HTC NVS...