My PA state tax return is saying that I entered rental return in my federal return. I have not done anything like that. How do I remove an entry under "Rents, Royalties"

Did you receive a Schedule K1?

Taxpayers use Schedule E (Form 1040) to report income or loss from rental real estate, royalties, partnerships, S corporations, estates, trusts, and residual interests in real estate mortgage investment conduits (REMICs).