Merge "Remove libstatsmetadata" into rvc-dev am: 2bbfa23bf1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11923902

Change-Id: Ief9909dfe6c21bb62e891677d3e08612241c56c3
tree: 02370b92e495b8cf7f54bedc8731909201aa7093
  1. stats/