Bill of attainder: “A legislative act, directed against a designated person, pronouncing him guilty of an alleged crime, (usually treason,) without trial or conviction according to the recognized rules of procedure, and passing sentence of death and attainder upon him.” http://thelawdictionary.org/bill-of-attainder/
This is not a bill of attainder.
It is as I define bill of attainder under the Constitution, Jiminy Cricket.