wifi: fix old vts tests on newer HAL

Older registerCallback is not deprecated until V1.4 HAL correctly.
As a result, their returning codes are still SUCCESS.

Bug: 173570755
Test: atest VtsHalWifiSupplicantV1_0TargetTest \
            VtsHalWifiSupplicantV1_1TargetTest \
            VtsHalWifiSupplicantV1_2TargetTest
Change-Id: Ib23821d64f53c144d74818fa3ed9aca06cd25a27