AUSTIN, Texas — A former prosecutor who used false testimony and withheld evidence to send a now-exonerated man to death row in Texas has lost an appeal to overturn his disbarment.The Dallas Morning News reports the Board of Disciplinary Appeals on Monday upheld the decision of the State Bar of Texas to disbar Charles Sebesta. The board’s decision is final.The Texas State Bar revoked the Burleson County district attorney’s law license in June, finding he had engaged in prosecutorial misconduct in the case …