Revert "add aconfigd-system binary and libaconfigd_system librar..."

Revert submission 3332613-system_aconfigd_rust_binary

Reason for revert: Droidmonitor created revert due to b/377698523. Will be verifying through ABTD before submission.

Reverted changes: /q/submissionid:3332613-system_aconfigd_rust_binary

Change-Id: I90e6ff92560c2818242b817a757998b65e60350d