Removing the typed arrays

Its not clear that we will be able to leverage the Float64Array.  It may also be that the overhead of constructing these small arrays negates any benefit of faster access.  And for all coordinate arrays, we'll need arrays that grow/shrink.

test/spec/ol/geom/point.test.js

@@ -20,9 +20,8 @@ describe('ol.geom.Point', function() {
 
   describe('#coordinates', function() {
 
-    it('is a Float64Array', function() {
+    it('is an array', function() {
       var point = new ol.geom.Point([10, 20]);
-      expect(point.coordinates).toBeA(Float64Array);
 
       expect(point.coordinates.length).toBe(2);
       expect(point.coordinates[0]).toBe(10);