[MQTT] Use existing fields instead of creating new ones (Server)

server/model/monitor.js

@@ -79,11 +79,9 @@ class Monitor extends BeanModel {
             pushToken: this.pushToken,
             notificationIDList,
             tags: tags,
-            mqttPort: this.mqttPort,
             mqttUsername: this.mqttUsername,
             mqttTopic: this.mqttTopic,
             mqttSuccessMessage: this.mqttSuccessMessage
-
         };
     }
 
@@ -354,7 +352,7 @@ class Monitor extends BeanModel {
                 } else if (this.type === "mqtt") {
                     try {
                         bean.msg = await mqttAsync(this.url, this.mqttTopic, this.mqttSuccessMessage, {
-                            mqttPort: this.mqttPort,
+                            mqttPort: this.port,
                             mqttUsername: this.mqttUsername,
                             mqttPassword: this.mqttPassword,
                             interval: this.interval,

server/server.js

@@ -588,7 +588,6 @@ exports.entryPage = "dashboard";
                 bean.dns_resolve_type = monitor.dns_resolve_type;
                 bean.dns_resolve_server = monitor.dns_resolve_server;
                 bean.pushToken = monitor.pushToken;
-                bean.mqttPort = monitor.mqttPort;
                 bean.mqttUsername = monitor.mqttUsername;
                 bean.mqttTopic = monitor.mqttTopic;
                 bean.mqttSuccessMessage = monitor.mqttSuccessMessage;

src/pages/EditMonitor.vue

@@ -472,7 +472,6 @@ export default {
                     accepted_statuscodes: ["200-299"],
                     dns_resolve_type: "A",
                     dns_resolve_server: "1.1.1.1",
-                    mqttPort: "",
                     mqttUsername: "",
                     mqttPassword: "",
                     mqttTopic: "",