Remove api annotations from enums

src/ol/source/source.js

@@ -10,7 +10,6 @@ goog.require('ol.proj');
 /**
  * State of the source, one of 'undefined', 'loading', 'ready' or 'error'.
  * @enum {string}
- * @api
  */
 ol.source.State = {
   UNDEFINED: 'undefined',

src/ol/source/wmssource.js

@@ -7,7 +7,6 @@ goog.provide('ol.source.wms.ServerType');
  *     `'qgis'`. These are servers that have vendor parameters beyond the WMS
  *     specification that OpenLayers can make use of.
  * @enum {string}
- * @api
  */
 ol.source.wms.ServerType = {
   CARMENTA_SERVER: 'carmentaserver',

src/ol/source/wmtssource.js

@@ -15,7 +15,6 @@ goog.require('ol.tilegrid.WMTS');
 /**
  * Request encoding. One of 'KVP', 'REST'.
  * @enum {string}
- * @api
  */
 ol.source.WMTSRequestEncoding = {
   KVP: 'KVP',  // see spec §8