Remove Emoticons

## Is your feature request related to a problem?
There is a feature that allows end-users to optionally select an emoticon while writing their post. This in itself is a great idea and feature, but it was implemented a long time ago when emoticons were not easily inserted into text. In today's world, this feature is built into the WYSIWYG editor and when the basic textbox is used, pretty much all keyboards/OSs have an option to allow this.

## Describe the solution you'd like
Unless we can get someone to provide a current use case for this feature, we should remove it and all related code/schema that supports it.

## Describe alternatives you've considered
None at this time.

## Additional context
None at this time.