Revert "sensorservice: use new convert functions"

Revert "sensors: adding a common convert lib"

Revert submission 2313818-sensors_shared_convert

Reason for revert: Breaks wembley_2GB-userdebug
Reverted Changes:
Icf64c8809:sensorservice: use new convert functions
Ibc6ed5566:libandroid_sensor_headers: make host_supported and...
Ib80130fc0:sensors: adding a common convert lib

Change-Id: I97972670832188d53d97a4b6918323a3e4581677