Remove loadNetworks from supplicant

It was used to migrate the legacy networks config from supplicant.
WifiConfigStoreLegacy was removed, this is not needed any more.

Bug: 140062548
Test: build and unit test

Change-Id: Ic1a356e0969bde7fd1a3e7c2378634748f3a9607
5 files changed
tree: d6e3c44c0cd2c3a55c1e99cf32dc13e9d39e9b9f
  1. service/
  2. PREUPLOAD.cfg