Add placeholder text on label inputs and clear buttons

nodes/core/core/80-function.html

@@ -77,9 +77,7 @@
             noerr: {value:0,required:true,validate:function(v){ return ((!v) || (v === 0)) ? true : false; }}
         },
         inputs:1,
-        inputLabels: [],
         outputs:1,
-        outputLabels: [],
         icon: "function.png",
         label: function() {
             return this.name;