Nope. Contract law doesn’t work like that. Signatures aren’t that powerful. You can’t sign away rights the law guarantees you. That part of the contract is just void. And hell, even if you could it would probably still be thrown out because a judge would look at it, see that it’s a take-it-or-leave it contract and that no reasonable person would assume such things are in a lease agreement and void it.
If the contract said “and you agree to give me your life savings” somewhere in the fine print that doesn’t make it enforceable.
It’s like half the point of having these things in law so landlords can’t put them in lease agreements.
The law doesn't spell out that you have a key to the unit, only access to it. For all the law cares you might have a passcode, retina scan, or button or other non-key device to gain access. But if you agree in your rental agreement that the access requires you to ask a front desk employee then it's solid as far as the law is concerned.
"The law" is a thing that is going to be interpreted and enforced by a human judge, one who is likely going to frown upon a landlord's creative interpretation of it.
A judge's job is not to apply the law to the letter, but to the spirit. They are not going to throw their hands up when a tenant is kept out of their unit, no matter what the landlord might have decided to sneak in into the rental agreement: the law is there to protect the tenant.
