Merge "libclat: Remove redundant "using android::net::.*"" am: 83acb39c6c am: 50b18a38d9 am: 70de7d92fa

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

Change-Id: Ic12bc598eca2024d6d8c65e0e8aef479b1b11bce