Prohibit host modules from using LOCAL_COPY_HEADERS

There are no users left, so remove all of this.

Test: lunch aosp_arm-eng; m -j native
Test: build/tools/kati_all_products.sh on aosp and internal master
Change-Id: I32f5c8b470a43dd203d7e20c192167630e4e6888
diff --git a/CleanSpec.mk b/CleanSpec.mk
index a3b5f3c..8087646 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -377,6 +377,8 @@
 $(call add-clean-step, rm -rf $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/previous_overlays.txt)
 $(call add-clean-step, rm -rf $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/current_packages.txt)
 
+$(call add-clean-step, rm -rf $(HOST_OUT_INTERMEDIATES)/include)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************