How to go back and remove the part of home buying?

[Builder]

There is no deduction for a home purchase unless you are referring to real estate taxes and mortgage interest/points as itemized deductions which can be reviewed/updated/edited under Deductions & Credits in the Federal Taxes menu view.    If you are referring to a home sale and new purchase wit commensurate loss or gain on sale, then.......go to the menu bar and click on Federal Taxes then click on Wages & Income.     Scroll down to Less Common Income and you'll see the line item for Sale of Home.    Click on the Start/Update box and the first question will ask .... Did you sell or have your home foreclosed in 2017?    Click on "No" to remove any home transaction data.   Hope this helps.