Revert^2 "Add sdk mutator for native modules"

f8e80229fedb47302e9cfd32990859a6308020cf

Change-Id: Ic30ab6b844684bfc3e8ece5a1913980d5fbf8de2
diff --git a/cc/genrule.go b/cc/genrule.go
index 155e410..9331448 100644
--- a/cc/genrule.go
+++ b/cc/genrule.go
@@ -27,6 +27,7 @@
 	Vendor_available   *bool
 	Ramdisk_available  *bool
 	Recovery_available *bool
+	Sdk_version        *string
 }
 
 // cc_genrule is a genrule that can depend on other cc_* objects.