fix: 定时任务表达式校验 (#4325)

Co-authored-by: chenjianxing <jianxing.chen@fit2cloud.com>

frontend/src/common/js/cron.js

@@ -312,26 +312,12 @@ function checkListField(value, minimal, maximal ) {
     values[j] = st[j];
   }
 
-  var previousValue = -1;
-
   for (var i= 0; i < values.length; i++) {
     var currentValue = values[i];
 
     if (!checkIntValue(currentValue, minimal, maximal, true)) {
       return false;
     }
-
-    try {
-      var val = parseInt(currentValue, 10);
-
-      if (val <= previousValue) {
-        return false;
-      } else {
-        previousValue = val;
-      }
-    } catch (e) {
-      // we have always an int
-    }
   }
 
   return true;