fix: remove unused import and variable in zgrok-control

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: copyleftdev

crates/zgrok-control/src/auth/api_key.rs

@@ -361,7 +361,7 @@ mod tests {
     }
 
     fn create_test_key() -> ApiKey {
-        let (_, hash) = generate_key();
+        let _ = generate_key();
         ApiKey {
             id: Uuid::new_v4(),
             account_id: Uuid::new_v4(),

crates/zgrok-control/src/db/api_keys.rs

@@ -183,7 +183,6 @@ impl<S: ApiKeyStore> ApiKeyService<S> {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use chrono::Duration;
 
     fn create_service() -> ApiKeyService<InMemoryApiKeyStore> {
         let store = Arc::new(InMemoryApiKeyStore::new());