CLEVELAND (AP) – An outdoor advertising company says it is pulling down voter-fraud billboards in two swing states after complaints that they were meant to intimidate voters.   A group of civil rights attorneys and a Cleveland city councilwoman had complained that the billboards were meant to discourage lawful voting, especially by blacks. Polls have shown that black voters heavily support Democratic President Barack Obama.  Clear Channel Outdoor says some 145 billboards in Cleveland, Columbus and Milwaukee are being taken down.  The billboards warn: “Voter Fraud Is A Felony!” punishable by up to three and one-half years in prison and a $10,000 fine.  Clear Channel Outdoor has refused to identify who is behind the billboards. However, the company says it decided the billboards violate its policy against anonymous political ads.