Remove GeoJSON workaround for GeoServer

See #1569
See https://osgeo-org.atlassian.net/browse/GEOS-5996

test/spec/ol/format/geojson.test.js

@@ -1,5 +1,3 @@
-
-
 goog.require('ol.Feature');
 goog.require('ol.extent');
 goog.require('ol.format.GeoJSON');
@@ -520,20 +518,6 @@ describe('ol.format.GeoJSON', function() {
 
     });
 
-    it('can read out-of-specification CRS generated by GeoServer', function() {
-      // TODO: remove this when http://jira.codehaus.org/browse/GEOS-5996
-      // is fixed and widely deployed.
-      var json = {
-        crs: {
-          type: 'EPSG',
-          properties: {
-            code: '4326'
-          }
-        }
-      };
-      expect(format.readProjection(json)).to.be(ol.proj.get('EPSG:4326'));
-    });
-
   });
 
   describe('#writeFeatures', function() {