Exclude lingering traffic from loopback iface stats check

Lingering traffic from previous tests are only happens in
non-loopback interface. Stats gets from loopback interface
would not see them. Thus, exclude them from in-range check.

Test: atest TrafficStatsTest --rerun-until-failure 100
Bug: 164965653
Change-Id: Ic15c4c2e27f86b5711ada904c22734206c67d671
diff --git a/tests/cts/net/src/android/net/cts/TrafficStatsTest.java b/tests/cts/net/src/android/net/cts/TrafficStatsTest.java
index c92755e..1d9268a 100755
--- a/tests/cts/net/src/android/net/cts/TrafficStatsTest.java
+++ b/tests/cts/net/src/android/net/cts/TrafficStatsTest.java
@@ -254,13 +254,13 @@
         assertInRange("uidrxb", uidRxDeltaBytes, pktBytes + minExpExtraPktBytes,
                 pktBytes + pktWithNoDataBytes + maxExpExtraPktBytes + deltaRxOtherPktBytes);
         assertInRange("iftxp", ifaceTxDeltaPackets, packetCount + minExpectedExtraPackets,
-                packetCount + packetCount + maxExpectedExtraPackets + deltaTxOtherPackets);
+                packetCount + packetCount + maxExpectedExtraPackets);
         assertInRange("ifrxp", ifaceRxDeltaPackets, packetCount + minExpectedExtraPackets,
-                packetCount + packetCount + maxExpectedExtraPackets + deltaRxOtherPackets);
+                packetCount + packetCount + maxExpectedExtraPackets);
         assertInRange("iftxb", ifaceTxDeltaBytes, pktBytes + minExpExtraPktBytes,
-                pktBytes + pktWithNoDataBytes + maxExpExtraPktBytes + deltaTxOtherPktBytes);
+                pktBytes + pktWithNoDataBytes + maxExpExtraPktBytes);
         assertInRange("ifrxb", ifaceRxDeltaBytes, pktBytes + minExpExtraPktBytes,
-                pktBytes + pktWithNoDataBytes + maxExpExtraPktBytes + deltaRxOtherPktBytes);
+                pktBytes + pktWithNoDataBytes + maxExpExtraPktBytes);
 
         // Localhost traffic *does* count against total stats.
         // Check the total stats increased after test data transfer over localhost has been made.