fix: remove Kafka and Kafka Manager due to Docker will deprecated link function in the future.

Author: ColinHuang

iot.json

@@ -23,30 +23,6 @@
         "type": "iot",
         "qcsVersion": "1.5"
     },
-    {
-        "description": "A simple docker image with both Kafka and Zookeeper",
-        "repository": "dockerhub",
-        "arch": "amd64",
-        "icon": "https://raw.githubusercontent.com/qnap-dev/container-apps/1.10/images/iot_kafka.png",
-        "displayName": "Kafka",
-        "name": "qnapnas/qiot-kafka_amd64",
-        "version": "0.1",
-        "location": "https://hub.docker.com/r/qnapnas/qiot-kafka_amd64/",
-        "type": "iot",
-        "qcsVersion": "1.5"
-    },
-    {
-        "description": "A tool for managing Apache Kafka",
-        "repository": "dockerhub",
-        "arch": "amd64",
-        "icon": "https://raw.githubusercontent.com/qnap-dev/container-apps/1.10/images/iot_default.png",
-        "displayName": "Kafka Manager",
-        "name": "qnapnas/qiot-kafka-manager_amd64",
-        "version": "0.1",
-        "location": "https://hub.docker.com/r/qnapnas/qiot-kafka-manager_amd64/",
-        "type": "iot",
-        "qcsVersion": "1.5"
-    },
     {
         "description": "RabbitMQ is a highly reliable enterprise messaging system based on the emerging AMQP standard",
         "repository": "dockerhub",
@@ -167,30 +143,6 @@
         "type": "iot",
         "qcsVersion": "1.5"
     },
-    {
-        "description": "A simple docker image with both Kafka and Zookeeper",
-        "repository": "dockerhub",
-        "arch": "armhf",
-        "icon": "https://raw.githubusercontent.com/qnap-dev/container-apps/1.10/images/iot_kafka.png",
-        "displayName": "Kafka",
-        "name": "qnapnas/qiot-kafka_armhf",
-        "version": "0.1",
-        "location": "https://hub.docker.com/r/qnapnas/qiot-kafka_armhf/",
-        "type": "iot",
-        "qcsVersion": "1.5"
-    },
-    {
-        "description": "A tool for managing Apache Kafka",
-        "repository": "dockerhub",
-        "arch": "armhf",
-        "icon": "https://raw.githubusercontent.com/qnap-dev/container-apps/1.10/images/iot_default.png",
-        "displayName": "Kafka Manager",
-        "name": "qnapnas/qiot-kafka-manager_armhf",
-        "version": "0.1",
-        "location": "https://hub.docker.com/r/qnapnas/qiot-kafka-manager_armhf/",
-        "type": "iot",
-        "qcsVersion": "1.5"
-    },
     {
         "description": "RabbitMQ is a highly reliable enterprise messaging system based on the emerging AMQP standard",
         "repository": "dockerhub",