Remove more thin wrappers from the shared lib

- These were only used for the unbundled launcher build, and Launcher
  can reference system code directly now

Bug: 219861883
Test: Builds/Presubmit
Change-Id: I1532f1b853765fb69c5bf46ad5a08230bde00c5f
Merged-In: I1532f1b853765fb69c5bf46ad5a08230bde00c5f