no one is talking about your Jailbreak obviously since we're in the Jailbreak section. You said you got apps from warez sites, warez = cracked apps = TiPb doesn't condone pirated apps. It's not like they are expensive.
you get that message because you're running cracked apps, iTunes can obviously tell you didn't pay for them since they aren't JBen apps but cracked. So the answer to getting rid of the message is to get rid of the cracked apps.