chore(package): update closure-util to version 1.11.0

- Remove closure-util.json, we're now using the same library version as closure-util
 - Disable analyzerChecks errors from closure-compiler
 - Remove WheelEvent constants from externs (fixed upstream)
 - Activate the unnecessaryCasts compiler check

externs/closure-compiler.js

@@ -15,13 +15,3 @@
  * @see http://www.w3.org/TR/pointerevents/#the-touch-action-css-property
  */
 CSSProperties.prototype.touchAction;
-
-/**
- * @type {number}
- */
-WheelEvent.DOM_DELTA_LINE;
-
-/**
- * @type {number}
- */
-WheelEvent.DOM_DELTA_PIXEL;