cmake: delete duplicate HAVE_GETADDRINFO test

cmake: delete duplicate HAVE_GETADDRINFO test

A custom `HAVE_GETADDRINFO` check came with the initial CMake commit
[1]. A later commit [2] added a standard check for it as well. The
standard check run before the custom one, so CMake ignored the latter.

The custom check was also non-portable, so this patch deletes it in
favor of the standard check.

[1] 4c5307b45655ba75ab066564afdc0c111a8b9291
[2] aec7c5a87c8482b6ddffa352d7d220698652262e

Closes #9731