Allow dead code for hex_string, since its not used for now

client-solid/public/robots.txt

@@ -0,0 +1,3 @@
+User-agent: *
+Disallow: /settings/
+Disallow: /public/

server/src/util/util.rs

@@ -1,6 +1,7 @@
 use rand::Rng;
 
 // This will do for now
+#[allow(dead_code)]
 pub fn hex_string(length: usize) -> String {
     let mut rng = rand::thread_rng();
     let mut bytes = vec![0u8; length];