How to Disable Right Click Menu?

So the right click menu is cool and all, but I don’t really use it and I’d much rather have my normal, copy/paste/spellcheck features back. How do I do this? Can’t tell if it’s a setting I turned on or not, but a few passes through the various menu has shown me nothing I can see that will affect this behavior.

Example: https://imgur.com/jMCcFyq