Removing default thresholds values.

public/vendor/flot/jquery.flot.gauge.js

@@ -935,16 +935,7 @@
                         }
                     },
                     values: [
-                        {
-                            value: 50,
-                            color: "lightgreen"
-                        }, {
-                            value: 80,
-                            color: "yellow"
-                        }, {
-                            value: 100,
-                            color: "red"
-                        }
+                      
                     ]
                 }
             }