Inside your return please go to the left side menu and click on Income then T-Slips then T4RSP Income from an RRSP which will open a screen T4RSP - Summary. You can now view if there is an amount included here which can be edited or deleted.

You can also go to RRSP, lower in the menu and click on RRSP Profile to view all RRSP information where the income could have been entered through a checkmark.

For more information please review these TurboTax FAQ links included below.

https://turbotax.intuit.ca/tips/t4rsp-tax-form-statement-of-rrsp-income-in-canada-417

https://turbotax.intuit.ca/tips/how-to-withdraw-retirement-savings-plans-in-canada-5550