These features are now only used for qnetworkinterface_unix.cpp, so they
aren't needed for Windows or for Linux with AF_NETLINK support. This
commit removes the last couple of placess outside of that file where
they were used (the qnativesocketengine_unix.cpp code looked stale
anyway).
These tests cost us approximately 1300 ms during CMake time. This commit
does not change that because the tests are checked even if the condition
has already been forced OFF by previous conditions.
[ChangeLog][Build system] The QT_NO_GETIFADDRS and QT_NO_IPV6IFNAME
macros are deprecated. On a standard Linux build, they will be defined
to 1, even if the system does support getifaddrs() and ifnametoindex().
Task-number: QTBUG-107248
Task-number: QTBUG-115705
Change-Id: Ifbf974a4d10745b099b1fffd17775822a1a6e55f
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
fcb548878b