Allow dead_code for robonode-server related errors

crates/robonode-server/src/logic/op_authenticate.rs

@@ -36,6 +36,7 @@ pub struct Response {
 }
 
 /// Errors for the authenticate operation.
+#[allow(dead_code)]
 #[derive(Debug)]
 pub enum Error {
     /// The provided opaque liveness data could not be decoded.

crates/robonode-server/src/logic/op_enroll.rs

@@ -27,6 +27,7 @@ pub struct Request {
 pub struct Response;
 
 /// The errors on the enroll operation.
+#[allow(dead_code)]
 #[derive(Debug)]
 pub enum Error {
     /// The provided public key failed to load because it was invalid.

crates/robonode-server/src/logic/op_get_facetec_session_token.rs

@@ -19,6 +19,7 @@ pub struct Response {
 }
 
 /// Errors for the get facetec session token operation.
+#[allow(dead_code)]
 #[derive(Debug)]
 pub enum Error {
     /// Internal error at session token retrieval due to the underlying request