Merge "Remove obsolete property ro.kernel.android.tracing" am: 3661fc477c am: cb98552e03 am: 1ee0a2519e am: d15205e7cc

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

Change-Id: I2925414e9cb2ef68ddee4a6fc89c4d4b56e4def8