Remove uses of FixtureFactory from android package

Bug: 183235980
Test: m nothing
Change-Id: I72898ada020ee1a73fd534c61afb5c22fa00c1e5
diff --git a/android/defaults_test.go b/android/defaults_test.go
index b33cb52..a7542ab 100644
--- a/android/defaults_test.go
+++ b/android/defaults_test.go
@@ -83,10 +83,10 @@
 		}
 	`
 
-	result := emptyTestFixtureFactory.RunTest(t,
+	result := GroupFixturePreparers(
 		prepareForDefaultsTest,
 		FixtureWithRootAndroidBp(bp),
-	)
+	).RunTest(t)
 
 	foo := result.Module("foo", "").(*defaultsTestModule)
 
@@ -114,11 +114,11 @@
 		}
 	`
 
-	result := emptyTestFixtureFactory.RunTest(t,
+	result := GroupFixturePreparers(
 		prepareForDefaultsTest,
 		PrepareForTestWithAllowMissingDependencies,
 		FixtureWithRootAndroidBp(bp),
-	)
+	).RunTest(t)
 
 	missingDefaults := result.ModuleForTests("missing_defaults", "").Output("out")
 	missingTransitiveDefaults := result.ModuleForTests("missing_transitive_defaults", "").Output("out")