A Republican strategist tried to raise a ruckus about former President Barack Obama’s diaper-themed jab at former President Donald Trump — and found himself shut down instead. Political analyst Scott Jennings attempted to disparage Obama’s suggestion that Trump never changed a baby’s diaper — and laughter when a heckler retorted the 78-year-old Republican nominee had likely changed his own — but was swiftly cut off by New York Democrat Christine Quinn during a CNN panel discussion Friday morning. “Oh jeez,” Quinn told Jennings. “Don’t even start.” Want more breaking political news? Click for t…