Move ol.Object.createFromObject to its proper home as a simplified API function

src/ol/base/object.js

@@ -67,21 +67,6 @@ ol.Object.capitalize = function(str) {
 };
 
 
-/**
- * @param {ol.Object|Object} arg Argument.
- * @return {ol.Object} Object.
- */
-ol.Object.create = function(arg) {
-  if (arg instanceof ol.Object) {
-    return arg;
-  } else {
-    var object = new ol.Object();
-    object.setOptions(arg);
-    return object;
-  }
-};
-
-
 /**
  * @param {ol.Object} obj Object.
  * @return {Object.<string, {target: ol.Object, key: string}>} Accessors.

src/ol/base/object_test.js

@@ -367,21 +367,6 @@ function testBindSelf() {
 }
 
 
-function testCreateFromObject() {
-  var obj = {k: 1};
-  obj = ol.Object.create(obj);
-  assertTrue(obj instanceof ol.Object);
-  assertEquals(1, obj.get('k'));
-}
-
-
-function testCreateFromObject() {
-  var obj1 = new ol.Object();
-  var obj2 = ol.Object.create(obj1);
-  assertTrue(obj2 === obj1);
-}
-
-
 function testCreateWithOptions() {
   var obj = new ol.Object({k: 1});
   assertEquals(1, obj.get('k'));