Revert "Parallel Module Loading: Refactor threads pool and architecture"

This reverts commit 435557c989e5e32e4b3dd563dcbd8969a8d542ec.

Reason for revert: stability issue
Bug: 406160196
(cherry picked from https://android-review.googlesource.com/q/commit:58473c253f53f6d32f8749494400f3f293baf6b3)
Merged-In: Ic84dc4f6189f8950c73620a709e1ccceceb94faf
Change-Id: Ic84dc4f6189f8950c73620a709e1ccceceb94faf
3 files changed