fix: TokenHandle.createToken 移除重复的 Keys.hmacShaKeyFor 调用

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

custom-server-core/src/main/java/com/jomalls/custom/security/TokenHandle.java

@@ -252,7 +252,6 @@ public class TokenHandle {
 
 
         // 生成 JWT
         // 生成 JWT
         byte[] keyBytes = secret.getBytes(java.nio.charset.StandardCharsets.UTF_8);
         byte[] keyBytes = secret.getBytes(java.nio.charset.StandardCharsets.UTF_8);
-        Keys.hmacShaKeyFor(keyBytes);
         SecretKey signingKey = Keys.hmacShaKeyFor(keyBytes);
         SecretKey signingKey = Keys.hmacShaKeyFor(keyBytes);
 
 
         return Jwts.builder()
         return Jwts.builder()