Remove wake lock checks from TimeDetectorStrategy

Remove wake lock checks from TimeDetectorStrategyCallbackImpl since
they're no longer valid in all cases. Originally the code that performed
time calcs were the only callers but that first changed in commit
312da9b9 and since then calls have been added to dumpsys too.

Bug: 140712361
Bug: 147585410
Test: boot
Change-Id: I725699d81815eedc570d648dde7ed425009fb3bd