The congressional hearing with former Hunter Biden associate Tony Bobulinski failed to advance the GOP’s impeachment investigation of President Joe Biden — and even former President Donald Trump ally Steve Bannon knew it. On Wednesday’s edition of “War Room,” he raged about Republicans’ inability to control the forum, calling the whole thing a “fiasco” and complaining that Democratic members like Reps. Jamie Raskin and Alexandria Ocasio-Cortez ripped the whole thing to shreds in front of the public. “I don’t even know how to go through this today,” Bannon thundered. “What the purpose of this c…