Silence false positive warnings.

Use `allow(deadcode)` on structs that exist solely to be debug-printed.

examples/config/src/main.rs

@@ -8,6 +8,7 @@ use rocket::serde::Deserialize;
 
 #[derive(Debug, Deserialize)]
 #[serde(crate = "rocket::serde")]
+#[allow(dead_code)]
 struct AppConfig {
     key: String,
     port: u16

examples/forms/src/main.rs

@@ -33,6 +33,7 @@ enum Category {
 }
 
 #[derive(Debug, FromForm)]
+#[allow(dead_code)]
 struct Submission<'v> {
     #[field(validate = len(1..))]
     title: &'v str,
@@ -48,6 +49,7 @@ struct Submission<'v> {
 }
 
 #[derive(Debug, FromForm)]
+#[allow(dead_code)]
 struct Account<'v> {
     #[field(validate = len(1..))]
     name: &'v str,
@@ -57,6 +59,7 @@ struct Account<'v> {
 }
 
 #[derive(Debug, FromForm)]
+#[allow(dead_code)]
 struct Submit<'v> {
     account: Account<'v>,
     submission: Submission<'v>,