meson: Remove CONFIG_STATX and CONFIG_STATX_MNT_ID

meson: Remove CONFIG_STATX and CONFIG_STATX_MNT_ID

CONFIG_STATX and CONFIG_STATX_MNT_ID are not used since commit
e0dc2631ec4 ("virtiofsd: Remove source").

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250424-buildsys-v1-2-97655e3b25d7@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit 6804b89fb531f5dd49c1e038214c89272383e220)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>