[java] Remove deprecated AppCacheStatus enum from the HTML5 package (#15973)

* Remove deprecated AppCacheStatus enum from the HTML5 package

* Remove deprecated app cache commands from DriverCommand interface

---------

Co-authored-by: Diego Molina <[email protected]>

Author: iampopovich

java/src/org/openqa/selenium/html5/AppCacheStatus.java

@@ -106,8 +106,6 @@ public interface DriverCommand {
   String SET_SCRIPT_TIMEOUT = "setScriptTimeout";
   String GET_LOCATION = "getLocation";
   String SET_LOCATION = "setLocation";
-  String GET_APP_CACHE = "getAppCache";
-  String CLEAR_APP_CACHE = "clearAppCache";
   String GET_LOCAL_STORAGE_ITEM = "getLocalStorageItem";
   String GET_LOCAL_STORAGE_KEYS = "getLocalStorageKeys";
   String SET_LOCAL_STORAGE_ITEM = "setLocalStorageItem";