Revert "Remove ro.apex.updatable=false in GSI"

This reverts commit d24bc21f06b24588eb9dcd7dbe4663d68b960392.

Reason for revert: Waiting relative feature done.

Change-Id: I455bcaaba567260197d8ebe88175a9d40fb49195
diff --git a/target/product/gsi_release.mk b/target/product/gsi_release.mk
index aee7959..faaa935 100644
--- a/target/product/gsi_release.mk
+++ b/target/product/gsi_release.mk
@@ -29,6 +29,12 @@
     system/product/% \
     system/system_ext/%
 
+
+# GSI doesn't support apex for now.
+# Properties set in product take precedence over those in vendor.
+PRODUCT_PRODUCT_PROPERTIES += \
+    ro.apex.updatable=false
+
 # Split selinux policy
 PRODUCT_FULL_TREBLE_OVERRIDE := true