Revert^2 "Add sdk mutator for native modules"

f8e80229fedb47302e9cfd32990859a6308020cf

Change-Id: Ic30ab6b844684bfc3e8ece5a1913980d5fbf8de2
diff --git a/rust/rust.go b/rust/rust.go
index f446ef0..6fe8871 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -164,6 +164,10 @@
 	return false
 }
 
+func (mod *Module) UseSdk() bool {
+	return false
+}
+
 func (mod *Module) UseVndk() bool {
 	return false
 }
@@ -184,6 +188,10 @@
 	return ""
 }
 
+func (mod *Module) AlwaysSdk() bool {
+	return false
+}
+
 func (mod *Module) ToolchainLibrary() bool {
 	return false
 }