gfxstream: guest: nuke Fuchsia Goldfish Address Space

The plan for Fuchsia emulators is Lavapipe and
virtio-gpu/gfxstream for acceleration.  Currently,
Fuchsia guest side is frozen in place for Goldfish,
so this has no effect.

This in contrast to Android, where Goldfish Address
Space is still projected to be used for another year.

Reviewed-by: Aaron Ruby <aruby@blackberry.com>
Acked-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27246>

src/gfxstream/guest/GoldfishAddressSpace/goldfish_address_space.cpp

@@ -13,9 +13,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#if defined(__Fuchsia__)
-#include "goldfish_address_space_fuchsia.impl"
-#else
+#if !defined(__Fuchsia__)
 #include "goldfish_address_space_android.impl"
 #endif