PHILADELPHIA - The Philadelphia 76ers have parted ways with head coach Brett Brown after seven seasons, the team announced Monday.The team will begin a search process for a new head coach immediately.“I have a tremendous level of respect for Brett both personally and professionally and appreciate all he’s done for the 76ers organization and the City of Philadelphia,” Philadelphia 76ers General Manager Elton Brand said. “He did many positive things during his time here, developing young talent and helping position our team for three straight postseason appearances.