Lps 45361

It is safe to remove the escape, because when we add or update a CalendarBooking, we already sanitized description of CalendarBooking. 
See following code snippet of addCalendarBooking of CalendarBookingLocalServiceImpl
for (Locale locale : descriptionMap.keySet()) {
			String sanitizedDescription = SanitizerUtil.sanitize(
				calendar.getCompanyId(), calendar.getGroupId(), userId,
				CalendarBooking.class.getName(), calendarBookingId,
				ContentTypes.TEXT_HTML, Sanitizer.MODE_ALL,
				descriptionMap.get(locale), null);

			descriptionMap.put(locale, sanitizedDescription);
		}

Here is sample data of CalendarBooking  (You can see we already escape some special character)
<?xml version='1.0' encoding='UTF-8'?>
<root available-locales="en_US" default-locale="en_US">
<Description 
&lt;p>&amp;nbsp;&lt;/p>

&lt;p>&amp;lt;script&amp;gt;alert("haha")&amp;lt;/script&amp;gt;&lt;/p></Description></root>language-id="en_US">&lt;p>&lt;strong>sdfsdfsdfsfs&lt;/strong>&lt;/p>

&lt;p>&amp;lt;this is&amp;nbsp; a test&amp;gt;&lt;/p>