Disable log for per uid blocked status changed event

This consumes ~3.5% system logs, however it is not very useful
when debugging since similar information could be obtained from
dumpsys {connectivity|netpolicy}. Thus, remove the log.

Test: manual
Bug: 135504481
Change-Id: I04d2b7402f892546722fe6868c521afd9534f183

services/core/java/com/android/server/ConnectivityService.java

@@ -1374,10 +1374,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
         if (nri == null || net == null || !LOGD_BLOCKED_NETWORKINFO) {
             return;
         }
-        String action = blocked ? "BLOCKED" : "UNBLOCKED";
-        log(String.format("Blocked status changed to %s for %d(%d) on netId %d", blocked,
-                nri.mUid, nri.request.requestId, net.netId));
-        mNetworkInfoBlockingLogs.log(action + " " + nri.mUid);
+        final String action = blocked ? "BLOCKED" : "UNBLOCKED";
+        mNetworkInfoBlockingLogs.log(String.format(
+                "%s %d(%d) on netId %d", action, nri.mUid, nri.request.requestId, net.netId));
     }
 
     /**