Delete IPv4 specific test.

Using `no-try` since there's a rebase problem downstream related to
changes that this CL will unblock.

Bug: none
No-try: true
Change-Id: I249b60d2a6798659bf5a0159de6fde4e36b6652e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/428401
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org>
Reviewed-by: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#46369}