Merge "API: Clean up redundant and ineffective usages of SystemApi and TestApi"

am: af0e1c2fa5

Change-Id: I016cacee1e1de6c7a8269fc3605ed25716598d9e

core/java/android/net/TrafficStats.java

@@ -274,7 +274,6 @@ public class TrafficStats {
      * Changes only take effect during subsequent calls to
      * {@link #tagSocket(Socket)}.
      */
-    @SystemApi
     @SuppressLint("Doclava125")
     public static void setThreadStatsUid(int uid) {
         NetworkManagementSocketTagger.setThreadSocketStatsUid(uid);
@@ -313,7 +312,6 @@ public class TrafficStats {
      *
      * @see #setThreadStatsUid(int)
      */
-    @SystemApi
     @SuppressLint("Doclava125")
     public static void clearThreadStatsUid() {
         NetworkManagementSocketTagger.setThreadSocketStatsUid(-1);