Clean up after u2f endpoint split

src/api/core/two_factor.rs

@@ -252,23 +252,10 @@ fn generate_u2f(data: JsonUpcase<PasswordData>, headers: Headers, conn: DbConn)
     let user_uuid = &headers.user.uuid;
 
     let u2f_type = TwoFactorType::U2f as i32;
-    let register_type = TwoFactorType::U2fRegisterChallenge;
-    let (enabled, challenge) = match TwoFactor::find_by_user_and_type(user_uuid, u2f_type, &conn) {
-        Some(_) => (true, String::new()),
-        None => {
-            let c = _create_u2f_challenge(user_uuid, register_type, &conn);
-            (false, c.challenge)
-        }
-    };
+    let enabled = TwoFactor::find_by_user_and_type(user_uuid, u2f_type, &conn).is_some();
 
     Ok(Json(json!({
         "Enabled": enabled,
-        "Challenge": {
-            "UserId": headers.user.uuid,
-            "AppId": APP_ID.to_string(),
-            "Challenge": challenge,
-            "Version": U2F_VERSION,
-        },
         "Object": "twoFactorU2f"
     })))
 }
@@ -283,15 +270,7 @@ fn generate_u2f_challenge(data: JsonUpcase<PasswordData>, headers: Headers, conn
 
     let user_uuid = &headers.user.uuid;
 
-    let u2f_type = TwoFactorType::U2f as i32;
-    let register_type = TwoFactorType::U2fRegisterChallenge;
-    let (enabled, challenge) = match TwoFactor::find_by_user_and_type(user_uuid, u2f_type, &conn) {
-        Some(_) => (true, String::new()),
-        None => {
-            let c = _create_u2f_challenge(user_uuid, register_type, &conn);
-            (false, c.challenge)
-        }
-    };
+    let challenge = _create_u2f_challenge(user_uuid, TwoFactorType::U2fRegisterChallenge, &conn).challenge;
 
     Ok(Json(json!({
         "UserId": headers.user.uuid,