[fix] remove some internal urls and emails

src/sql/engine/expr/ob_expr_concat.cpp

@@ -440,7 +440,7 @@ int ObExprConcat::eval_concat(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_
     }
     if (ob_is_text_tc(res_type)) {
       // FIXME bin.lb: mysql mode can not reach here, since result type is always varchar.
-      // Seem to be a bug: https://work.aone.alibaba-inc.com/issue/24653475
+      // Seem to be a bug:
       max_len = OB_MAX_PACKET_LENGTH;
     }
     // mysql mode: all param calc types are varchar;