Removes Stamen

Signed-off-by: Daniel Kastl <[email protected]>

Author: dkastl

app/views/gtt_map_layers/_form.html.erb

@@ -22,7 +22,7 @@
   <p>
     <%= f.select :source,
       options_for_select(
-        ['BingMaps','CartoDB','Google','ImageStatic','ImageWMS','OSM','Raster','Stamen',
+        ['BingMaps','CartoDB','Google','ImageStatic','ImageWMS','OSM','Raster',
          'TileJSON','TileWMS','UTFGrid','Vector','VectorTile','WMTS','XYZ'],
         selected: f.object.source ),
       { include_blank: t('map_layer.source_options_select') }
@@ -51,7 +51,7 @@
   document.addEventListener('DOMContentLoaded', function() {
     const map_layer_config = {
       'Image': ['ImageStatic','ImageWMS','Raster'],
-      'Tile': ['BingMaps','CartoDB','OSM','Stamen','TileJSON','TileWMS','UTFGrid','WMTS','XYZ'],
+      'Tile': ['BingMaps','CartoDB','OSM','TileJSON','TileWMS','UTFGrid','WMTS','XYZ'],
       'MapboxVector': [],
       'Vector': ['Vector'],
       'VectorTile': ['VectorTile'],