Switch some deprecated variables to obsolete

These are no longer used.

Test: check build_test logs for "has been deprecated"
Change-Id: Icb13891863d0b9b6a00e18d0f8f88e6306a24f8c
diff --git a/core/config.mk b/core/config.mk
index 43eaf01..4a0c540 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -60,11 +60,11 @@
 
 # Mark variables deprecated/obsolete
 CHANGES_URL := https://android.googlesource.com/platform/build/+/master/Changes.md
-$(KATI_deprecated_var PATH,Do not use PATH directly. See $(CHANGES_URL)#PATH)
+$(KATI_obsolete_var PATH,Do not use PATH directly. See $(CHANGES_URL)#PATH)
 $(KATI_obsolete_var PYTHONPATH,Do not use PYTHONPATH directly. See $(CHANGES_URL)#PYTHONPATH)
 $(KATI_obsolete_var OUT,Use OUT_DIR instead. See $(CHANGES_URL)#OUT)
 $(KATI_obsolete_var ANDROID_HOST_OUT,Use HOST_OUT instead. See $(CHANGES_URL)#ANDROID_HOST_OUT)
-$(KATI_deprecated_var ANDROID_PRODUCT_OUT,Use PRODUCT_OUT instead. See $(CHANGES_URL)#ANDROID_PRODUCT_OUT)
+$(KATI_obsolete_var ANDROID_PRODUCT_OUT,Use PRODUCT_OUT instead. See $(CHANGES_URL)#ANDROID_PRODUCT_OUT)
 $(KATI_obsolete_var ANDROID_HOST_OUT_TESTCASES,Use HOST_OUT_TESTCASES instead. See $(CHANGES_URL)#ANDROID_HOST_OUT_TESTCASES)
 $(KATI_obsolete_var ANDROID_TARGET_OUT_TESTCASES,Use TARGET_OUT_TESTCASES instead. See $(CHANGES_URL)#ANDROID_TARGET_OUT_TESTCASES)
 $(KATI_deprecated_var ANDROID_BUILD_TOP,Use '.' instead. See $(CHANGES_URL)#ANDROID_BUILD_TOP)