Dedup prebuilt mutator registration

Test: m checkbuild
Bug: 146540677
Change-Id: I9f8a11adf61fe6f352ec1eabc7c5bac332348ba2
diff --git a/java/java_test.go b/java/java_test.go
index 157dea1..f93d69c 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -74,8 +74,7 @@
 	RegisterDocsBuildComponents(ctx)
 	RegisterStubsBuildComponents(ctx)
 	RegisterSdkLibraryBuildComponents(ctx)
-	ctx.PreArchMutators(android.RegisterPrebuiltsPreArchMutators)
-	ctx.PreArchMutators(android.RegisterPrebuiltsPostDepsMutators)
+	android.RegisterPrebuiltMutators(ctx)
 	ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
 
 	RegisterPrebuiltApisBuildComponents(ctx)