How would you write to your in-class team, that you are going to drop the class, leaving no hard feelings? We have a project to do with them but I don't have the time and am not sure if this email is appropriate for them. What do you think? I would greatly appreciate your advice.
Here is what I am thinking of sending them.
Hello guys,
Hope you having a good weekend
I’m writing to you to let you know that unfortunately and for personal reasons, I have to drop this class. I have sent an email to the professor, so he should be aware of it very soon.
I hope you understand, and I wish you guys all the best on the project.
Sincerely,
Your suggestion looks fine.  I would consider making an offer to bring them up to speed on anything you have been working on that could help them out.