Clean up libtimeinstate

Address comments & issues with initial libtimeinstate commit including:
- Eliminating overlogging
- Removing unnecessary typedefs
- Fixing incorrect use of uint32_t in getUidsCpuFreqTimes

Test: libtimeinstate_test passes
Bug: 78498733
Change-Id: I26feb26eeeb01d5c4004eef2d845446664956bc2
Signed-off-by: Connor O'Brien <connoro@google.com>