Opentsdb datasource labeling fix (#8929)

* Fix Labeling issue when hiding Queries.

Issue #8928

* Fix spacing.

* Replacing tabs with spaces.

* Fix for jshint

public/app/plugins/datasource/opentsdb/datasource.js

@@ -53,6 +53,10 @@ function (angular, _, dateMath) {
         }
       });
 
+      options.targets = _.filter(options.targets, function(query) {
+        return query.hide !== true;
+      });
+
       return this.performTimeSeriesQuery(queries, start, end).then(function(response) {
         var metricToTargetMapping = mapMetricsToTargets(response.data, options, this.tsdbVersion);
         var result = _.map(response.data, function(metricData, index) {