removed unused tile sets

web/js/main.js

@@ -21,37 +21,12 @@ mymap
   //.on('locationerror', onLocationError)
   .locate({setView: true, maxZoom: 16});
 
-var Esri_WorldGrayCanvas = L.tileLayer('https://server.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Light_Gray_Base/MapServer/tile/{z}/{y}/{x}', {
-	attribution: 'Tiles © Esri — Esri, DeLorme, NAVTEQ'
-});
-
-// no https :/
-var OpenStreetMap_BlackAndWhite = L.tileLayer('http://{s}.tiles.wmflabs.org/bw-mapnik/{z}/{x}/{y}.png', {
-	attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
-});
-
-var OsmColour = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
-    attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
-})
-
-var Stamen_Toner = L.tileLayer('https://stamen-tiles-{s}.a.ssl.fastly.net/toner/{z}/{x}/{y}.{ext}', {
-	attribution: 'Map tiles by <a href="http://stamen.com">Stamen Design</a>, <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a> &mdash; Map data &copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>',
-	subdomains: 'abcd',
-	minZoom: 0,
-	maxZoom: 20,
-	ext: 'png'
-});
-
 var CartoDB_Positron = L.tileLayer('https://cartodb-basemaps-{s}.global.ssl.fastly.net/light_all/{z}/{x}/{y}.png', {
 	attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> &copy; <a href="http://cartodb.com/attributions">CartoDB</a>',
 	subdomains: 'abcd',
 	maxZoom: 19
 });
 
-//Esri_WorldGrayCanvas.addTo(mymap);
-//OpenStreetMap_BlackAndWhite.addTo(mymap);
-//OsmColour.addTo(mymap);
-//Stamen_Toner.addTo(mymap);
 CartoDB_Positron.addTo(mymap);
 
 function popUp(f,l) {