Former President Donald Trump’s one-time attorney Tim Parlatore clashed with MSNBC’s Ari Melber on Friday over the issue of how the former president could effectively impeach the testimony of Michael Cohen, another former Trump attorney planning to give evidence against him in the Manhattan hush payment trial. The dispute flared when Parlatore explained how the Trump camp could use yet another lawyer linked to Trump, Bob Costello — and Melber, himself a lawyer, was unconvinced. “A Trump-connected lawyer who has his own credibility issues including publicly releasing what would have been attorn…