Remove uses of FixtureFactory from android package

Bug: 183235980
Test: m nothing
Change-Id: I72898ada020ee1a73fd534c61afb5c22fa00c1e5
diff --git a/android/prebuilt_test.go b/android/prebuilt_test.go
index 32af5df..ced37fe 100644
--- a/android/prebuilt_test.go
+++ b/android/prebuilt_test.go
@@ -284,7 +284,7 @@
 				t.Errorf("windows is assumed to be disabled by default")
 			}
 
-			result := emptyTestFixtureFactory.Extend(
+			result := GroupFixturePreparers(
 				PrepareForTestWithArchMutator,
 				PrepareForTestWithPrebuilts,
 				PrepareForTestWithOverrides,