Remove old dumpstate aidl methods

In Q we added new aidl methods for dumpstate to communicate with
SystemServer. The old methods can be removed now.

This change is functionally equivalent to before except for how progress
is reported. Dumpstate loads previous run stats and calculates expected
run time. If the current run exceeds that time, it used to let the
client know via onMaxProgressUpdated().

Given the API world, this CL simplifies this model so that dumpstate
conveys just one piece of information, i.e. final progress precentage,
rather than current, previous_max, and new_max.

Test: atest dumpstate_test
Test: bugreport from power button works as expected
BUG: 128980174

Change-Id: Id9103649b0f7c8e6ea0b79583ea04825cb5b455f