Incremental build going across CL in [1] needs to remove the old
symlink to avoid hitting mkdir error.
[1]: commit
3f56a330412b56212acc5a9ed19b747c8943b7f2
Change-Id: Iff62ed55eb2782ba3e1e9b6de39a691de2427384
$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+# $(PRODUCT_OUT)/recovery/root/sdcard goes from symlink to folder.
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/sdcard)
+
# ************************************************
# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
# ************************************************