Revert "[People Service] Add throttling to DataManager add / change listener"

This reverts commit d5b37667d0b36c9fc55f27b2783c295826d59026.

Reason for revert: Causes test failures due to direct boot aware

Change-Id: Ibbc4946811e19d08311f929c6c43b2a984be587d
Bug: 270675087
5 files changed