Revert "[Wi-Fi] Refactor WifiConnectionPreferenceController with WifiTrackerLib"

This reverts commit ebf8ffd8fdc114fd9ca84fa02339b5ab4433b733.

Reason for revert: b/161659380

Bug: 161659380
Test: manual, observe threads after launching 'Network & internet'.
Change-Id: I28773eac40c6bf194e3410b829a1a7b744f79597
Merged-In: Id4901d632f7f4634461ebbbc096e36d348a33365
2 files changed