[CS05]Remove the hidden API usage of MetricsLogger

Legacy metrics are unused and deprecated, so they are being removed.
Therefore, delete the usage of the hidden MetricsLogger API.

Bug: 157966864
Test: atest CtsNetTestCases
      atest CaptivePortalTest
      atest ConnectivityServiceTest
Change-Id: I51241f5d50ec580015882c84dd917b015c700c7c