Merge "libclat: Remove redundant "using android::net::.*"" am: 83acb39c6c am: 50b18a38d9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1989915

Change-Id: I4ab216bbd148f747c8e8b0f3dfbbd0dc9253de04