Make Tethering module depend on net-utils-device-common-ip.

NetworkStack module utils are duplicated to net-utils-device-common-ip,
delete the module utils source code and use net-utils-device-common-ip
instead.

Bug: 235901424
Test: atest TetheringTests
Change-Id: I19fe72a92d6de1084963c2b3a38d094f8da2a91e
diff --git a/Tethering/Android.bp b/Tethering/Android.bp
index bfba5cd..638eb29 100644
--- a/Tethering/Android.bp
+++ b/Tethering/Android.bp
@@ -47,6 +47,7 @@
         "net-utils-framework-common",
         "net-utils-device-common",
         "net-utils-device-common-bpf",
+        "net-utils-device-common-ip",
         "net-utils-device-common-netlink",
         "netd-client",
         "tetheringstatsprotos",