Cleanup StatsPullAtomService

Move all variable declarations to top of file
Delete unused puller registrations
Migrate to new API

Test: m -j
Bug: 145565211
Change-Id: I03890e333dd179be3b8d075657cf84a2247a473c
1 file changed
tree: 657316fd86d3c8f3a8a575b85d1e2e6150438426
  1. apex/