Remove redundant Connection Arguments config in MySql Sink

Author: itsankit-google

mysql-plugin/widgets/Mysql-batchsink.json

@@ -168,18 +168,6 @@
           "label": "SQL_MODE",
           "name": "sqlMode"
         },
-        {
-          "widget-type": "keyvalue",
-          "label": "Connection Arguments",
-          "name": "connectionArguments",
-          "widget-attributes": {
-            "showDelimiter": "false",
-            "key-placeholder": "Key",
-            "value-placeholder": "Value",
-            "kv-delimiter": "=",
-            "delimiter": ";"
-          }
-        },
         {
           "widget-type": "toggle",
           "label": "Auto Reconnect",