Revert "Revert "Move wallpaper picker code to a separate directory""

This reverts commit 39de459a8621abfc91382ce7b4cdd37d09aaac12.
diff --git a/CleanSpec.mk b/CleanSpec.mk
index c132395..b2c5266 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -50,6 +50,8 @@
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/Launcher2_intermediates)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/Launcher2_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/Launcher2.apk)
+$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/Launcher2_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/Launcher2.apk)
 
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST