Revert "Headphones volume warning disabled by default"

This reverts commit 7cf06209dcdbadd41fabd7e4e7229832aa8ffff2.

Bug: 10297243.
Change-Id: I95b9b34bb38550af493f9a585b6940c4e18e39cc
diff --git a/CleanSpec.mk b/CleanSpec.mk
index c5c7fe3..758273b 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -182,6 +182,7 @@
 $(call add-clean-step, rm -f $(PRODUCT_OUT)/system/media/video/*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/media/audio/)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/media/audio/effects/)
+$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/framework-res_intermediates)
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************