Move to dalvik.vm.lib.2 to force default to libart

Bug: 14298175
Change-Id: Ie4a716dddddc4d339fd4f47033f2c546a1ca118a
diff --git a/CleanSpec.mk b/CleanSpec.mk
index 46e652b..0af94e0 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -249,6 +249,9 @@
 # Adding dalvik.vm.dex2oat-flags to eng builds
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
 
+# Rename persist.sys.dalvik.vm.lib.1 to allow new default
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************