Revert^2 "Set container to system for aconfig_declarations in AconfigFlags.bp"

This reverts commit 02287dc9e3dcf1fef015ca0db73d595800386f25.

Reason for revert: Performance regression is gone based on go/abtd verification, reintroduce the change.

Change-Id: I0dceae0d564612925f23002ac76fb60bbbe599f1
89 files changed