remove unused TcpTx/RxPackets java & jni constants

(is this a valid change from hiddenapi perspective?)

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I2dc1c54c56a628770149382f1e25b90a71f62167

framework-t/src/android/net/TrafficStats.java

@@ -1121,8 +1121,4 @@ public class TrafficStats {
     public static final int TYPE_TX_BYTES = 2;
     /** {@hide} */
     public static final int TYPE_TX_PACKETS = 3;
-    /** {@hide} */
-    public static final int TYPE_TCP_RX_PACKETS = 4;
-    /** {@hide} */
-    public static final int TYPE_TCP_TX_PACKETS = 5;
 }

service-t/jni/com_android_server_net_NetworkStatsService.cpp

@@ -47,8 +47,6 @@ enum StatsType {
     RX_PACKETS = 1,
     TX_BYTES = 2,
     TX_PACKETS = 3,
-    TCP_RX_PACKETS = 4,  // not supported, always returns UNKNOWN (-1)
-    TCP_TX_PACKETS = 5,  // not supported, always returns UNKNOWN (-1)
 };
 
 static uint64_t getStatsType(Stats* stats, StatsType type) {
@@ -61,8 +59,6 @@ static uint64_t getStatsType(Stats* stats, StatsType type) {
             return stats->txBytes;
         case TX_PACKETS:
             return stats->txPackets;
-        case TCP_RX_PACKETS:
-        case TCP_TX_PACKETS:
         default:
             return UNKNOWN;
     }