Delete the unused netlink-client lib from service.net.

This cl also paves the path for netlink-client lib migration, after
moving the netlink-client library to frameworks/libs/net/common and
build it as an individual library, deprecate the netlink-client lib
and use net-utils-device-common-netlink instead.

Bug: 192535368
Test: atest FrameworksNetTests
Change-Id: Iad91562d56c503399230e1fe6a635db68e07541d

services/net/Android.bp

@@ -23,7 +23,6 @@ java_library_static {
     ],
     static_libs: [
         "netd-client",
-        "netlink-client",
         "networkstack-client",
         "net-utils-services-common",
     ],