Skip SensorDevice disable sensors for HAL 2.0

SystemServerTimingAsync_StartSensorService_avg
Prefix -> 43.111111111111114O ms
Postfix -> 10.777777777777779 ms

Bug: 133859966
Test: Pushed libsensorservice onto local device. Observed that
code flow chose to skip disabling sensors for HAL 2.0 and framework
seemed to behave properly. Ran atest boottime and observed change in
sensor service start time.

Change-Id: I99f3d38b62e4bf73aeb76be55a1b6b8e72052215