[AudioProxy Metrics] Remove speaker_type field in AudioProxyConnectionStateChanged

Note: we are safe to change the enum type since the actual logging code
hasn't been submitted yet.

Flag: build.ENABLE_AUDIOPROXY
Bug: 384845820
Test: m libstats_proto_host
Change-Id: I993daa29423c19dd9cbc260d0d3f533469e77eda
1 file changed
tree: 65a4bdc5329bc3264165f79a8f0e4f1dc11e32de
  1. stats/
  2. OWNERS