Lyn Nofziger has told President Reagan he does not want a presidential pardon for his ethics law convictions, desiring instead to seek vindication through his appeal, according to the former White House adviser's attorney. E. Lawrence Barcella, who said Thursday that his client wrote Reagan several weeks ago and said he would refuse to accept any pardon that might be contemplated by Reagan before he leaves office next month. Nofziger, 63, is free on bond while appealing a 90-day sentence and $30,000 fine he received earlier this year for three felony convictions.