code: @SuppressWarnings("unchecked")
      @Override
      public Boolean execute() {
          User sfsOwner = CommandUtil.getSfsUser(owner, api);
          ISFSBuddyApi buddyApi = SmartFoxServer.getInstance()
                  .getAPIManager().getBuddyApi();
          buddyApi.removeBuddy(sfsOwner, buddy, fireClientEvent, fireServerEvent);
          return Boolean.TRUE;
      }
docs: /* (non-Javadoc)
  @see com.tvd12.ezyfox.core.command.BaseCommand#execute()