Google’s John Mueller said on Twitter that disabling the right click on your web pages and/or disabling the ability to select content on your web pages, has no impact on your SEO or rankings.
John did add that doing so is “obnoxious” and “useless” because it is easy to get around those prevention features.
Here are the tweets:

That’s a bit obnoxious & useless (easy to do it anyway), but doesn’t affect SEO.
— John ☆.o(≧▽≦)o.☆ (@JohnMu) October 13, 2017
We discussed this topic over 7 years ago but this is the first time we covered Google talking about it.
Do you disable these features? If so, why?
Forum discussion at Twitter.