fix(renderer): remove unecessary setElementStyles method

There is no need to expose this additional method inside of the Renderer
API. The functionality can be restored by looping and calling
`setElementStyle` instead.

Note that this change is changing code that was was introduced after
the last release therefore this fix is not a breaking change.

Closes #9000
Closes #9009

modules/@angular/core/src/animation/animation_style_util.ts

@@ -101,6 +101,12 @@ export function collectAndResolveStyles(collection: {[key: string]: string|numbe
   });
 }
 
+export function renderStyles(element: any, renderer: any, styles: {[key: string]: string|number}): void {
+  StringMapWrapper.forEach(styles, (value, prop) => {
+    renderer.setElementStyle(element, prop, value);
+  });
+}
+
 export function flattenStyles(styles: {[key: string]: string|number}[]) {
   var finalStyles = {};
   styles.forEach(entry => {