Remove user-triggered disconnect counters

Removes these fields of WifiConfiguration:
  numUserTriggeredWifiDisableLowRSSI
  numUserTriggeredWifiDisableBadRSSI
  numUserTriggeredWifiDisableNotHighRSSI
  numTicksAtBadRSSI
  numTicksAtNotHighRSSI
  numUserTriggeredJoinAttempts

Add parcel test for WifiConfiguration.

Bug: 33013630
Test: unit tests pass
Change-Id: I39566c4e7845b01899739c36d6ec633f272fec6f