BRUSSELS — The European Commission has fired one of its senior officials, Henrik Hololei, after an internal investigation found him guilty of breaking rules, three officials told POLITICO. Hololei, an Estonian, was subject to an investigation over allegedly violating rules on conflicts of interest, transparency, gift acceptance and document disclosure, according to documents seen by POLITICO last year. "I am disappointed but I accept the decision of the Commission and I'm happy that this long