LPS-48464 - Remove 'escapeHTML' methods from Liferay.Util

Hi Nate,

Attached is an update for https://issues.liferay.com/browse/LPS-48464.

There are also some instances of  'Liferay.Util.escapeHTML' being used in liferay-plugins.  I will send a separate pull for those.

Please let me know if there are any issues.

Thanks!