Missing dialogue on the Warner - MGM DVD.

I have the soundtrack LP of this film with dialogue; music and effects recorded directly from the original film soundtrack. When Cassius gets his servant to kill him after he has lost the battle, John Gielgud, as he is falling to the ground, says on the soundtrack on the LP "Caesar, thou art revenged. Even with the sword that killed thee!" This line is missing from the transfer of the film on the Warner MGM DVD. Does anyone know why?