Merge "Remove obsolete property ro.kernel.android.tracing" am: 3661fc477c am: cb98552e03 am: 1ee0a2519e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1498598

Change-Id: Icedff80bb584ab245b039d1bb3f5c56fb31d592c