sensors: remove the decomposition algorithm for compass sensor
sensors: remove the decomposition algorithm for compass sensor

The calibration library is generic and shouldn't depend on the hardware.
Thus remove the decomposition algorithm to make it more generic.

CRs-fixed: 659726
Change-Id: Ia9e1f48c5f0ec432db7953667dd694d815fe02ef

dianlujitao/platform_hardware_qcom_sensors,redmi2/android_hardware_qcom_sensors,dianlujitao/platform_hardware_qcom_sensors,TheStrix/platform-hardware-qcom-sensors,redmi2/android_hardware_qcom_sensors,TheStrix/platform-hardware-qcom-sensors