If you're removing the dependent so that the dependent can get the stimulus payment; it's not clear at this time whether that will work.
Instead the dependent may have to wail til next year. This basically means that there may be no need to remove the dependent, from your 2019 return.
"In essence, the stimulus check acts as an advance of a person's 2020 income tax refund. This means when he prepares his 2020 income tax return, there will be a line to include the section 6428 credit. The credit on his 2020 return is subtracted by any amount received as a stimulus check in 2020. If the amount he received as a stimulus check is less than the credit he is due, the difference will be included as part of his 2020 refund. If he has been overpaid by receiving the stimulus check, however, he will not be required to return any excess amount".
Reference: https://www.dailylocal.com/news/coronavirus/what-does-the-stimulus-check-mean-for-your-taxes/article...
