[SAE] Remove support for SAE Password identifier from API surface

Remove support for SAE Password identifier from API surface due to
privacy vulnerabilities that exist in the protocol.

Bug: 150897608
Test: atest WifiConfigurationTest
Test: Manually connect to SAE network without password id
Change-Id: I40ebf7720ee51ddf264d4f256a1a75b03f1a6ca6