Merge pull request #1491 from PrimozGodec/highcharta-heatmap-remove

Highcharts - Map contains complete functionality of heatmap, so heatmap is removed.

Author: kernc

Orange/widgets/_highcharts/chart.html

@@ -41,7 +41,6 @@
 <script src="offline-exporting.js"></script>
 <script src="no-data-to-display.js"></script>
 <script src="drilldown.js"></script>
-<script src="heatmap.js"></script>
 <script src="treemap.js"></script>
 <script src="orange-theme.js"></script>
 <script src="orange-selection.js"></script>