No, it doesn't remove the data from your actual 2017 tax return
...... poor wording. It is really confirming that you want to take out the (now $$ empty) forms in teh 2018 file, that transferred into 2018 from your 2017 file. It's just the forms that are in your 2018 file and does not touch 2017.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
