WASHINGTON (AP) - President Clinton today accepted the resignation of Franklin Raines as director of the Office of Management and Budget and appointed his deputy, Jack Lew, as successor. Raines, who served two years as budget director, is taking a job in the private sector. Both he and Clinton declined to identify the job. Raines was considered Clinton's top choice to replace White House chief of staff Erskine Bowles early this year. However, Bowles decided not to leave and Raines told Clinton aides that he did not want the job.