If the answer admits the allegations in the notice, or if no answer is filed within the thirty-day period, or if no hearing is requested within such period, the district director or asylum office director shall rescind the adjustment of status previously granted, and no appeal shall lie from his decision. 8 C.F.R. §246.2 62 FR 10385, Mar. 6, 1997, as amended at 64 FR 27881, May 21, 1999