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

config/example.json

@@ -33,8 +33,8 @@
     ],
     "jscomp_off": [
       "useOfGoogBase",
-      "unnecessaryCasts",
       "lintChecks",
+      "analyzerChecks",
       "missingProvide",
       "unknownDefines"
     ],