A giddy Fox News host celebrated his chance Thursday to finally compare President Joe Biden to Adolf Hitler in an apparent attempt to clap back on critics who’ve done the same to former President Donald Trump. Greg Gutfeld shared on “The Five” that Biden is “slow-walking his exit literally and figuratively” from the 2024 presidential race. The often incendiary host said Biden is also dragging the Democratic Party with him — a feeling former House Speaker Nancy Pelosi reportedly shares and has expressed concerns over. The right-wing host then said he was “so happy” to get to use “the Hitler ana…