Revert "Prevent native_init from starting TrafficController"

We are ready to remove traffic controller from netd, so
TrafficController::start() should be called from the system server.

This reverts commit c2984fdca83de11a6a4990576aab1596ef94909b.

Test: atest FrameworksNetTests FrameworksNetIntegrationTests
CtsNetTestCases:android.net.TrafficStatsTest NetworkUsageStatsTest
CtsHostsideNetworkTests

Change-Id: Ic324ad0c064271977ab35d7f55badee00098e196
diff --git a/service/jni/com_android_server_BpfNetMaps.cpp b/service/jni/com_android_server_BpfNetMaps.cpp
index bde52a5..113c449 100644
--- a/service/jni/com_android_server_BpfNetMaps.cpp
+++ b/service/jni/com_android_server_BpfNetMaps.cpp
@@ -39,8 +39,7 @@
 namespace android {
 
 static void native_init(JNIEnv* env, jobject clazz) {
-  // start is still being called by netd
-  Status status = mTc.initMaps();
+  Status status = mTc.start();
    if (!isOk(status)) {
     ALOGE("%s failed", __func__);
   }