Don't store a pointer to internal SensorManager

The underlying SensorManager::getInstanceForPackage already manages and
caches the SensorManager instance.
The fuzzers are treating this as a memory leak since it's never freed in
sensorservice.

Test: m
Bug: 266474722
Change-Id: I0025cf9c2e51f96e134dcdfe13771b5289535ce5
4 files changed