Revert "Wifi MAC Randomization: Developer option change global settings"

This reverts commit 0a20eda5.

Reason for revert: Enabling feature by default. Global flag moved to OEM configurable overlay instead

Bug: 123408542
Test: unit tests
Test: Manually verify developer option is gone

Change-Id: I34bfedba786e53426a941ad12ea7c7b119987420