Revert "dynamic_sensor: Add sensor manager init to sub-HAL 2.1." am: 1d509cf815 am: fb74ed236c

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/libhardware/+/15886139

Change-Id: I774582c61e10555535317eb679b9d731b2ebea25