Merge "Remove libstatsmetadata" into rvc-dev am: 271cbbd708 am: dc3676af72 am: 391de3c570

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

Change-Id: I5c42ac845f8c8ca51b2f70543ef77ed564fe91a2
tree: a68e57676648ac519f875f92aa698e108e14450a
  1. stats/