If this penthouse looks familiar, it played a starring role in “Succession” and “Babygirl” — and now the stunning spread in the Upper West Side’s tallest tower has taken a $7 million price hit. The glassy dwelling at 200 Amsterdam is still in the higher echelons of the market. But it’s now asking $31 million — down from $38 million. The new price puts the penthouse “more in line with the market,” and with rival units at Billionaires’ Row buildings like 111 W. 57th St., said Serhant broker Peter