The state Fair Political Practices Commission agreed to drop its nearly $1-million campaign corruption lawsuit against former San Diego Mayor Roger Hedgecock in exchange for a $30,000 payment from Hedgecock, now a radio talk show host. Although the settlement requires the payment from Hedgecock, it absolves him of any liability for violations of campaign donation limits and public disclosure laws. Allegations that he and his political supporters illegally laundered more than $350,000 for use by his 1983 mayoral campaign resulted in two criminal trials, conviction on 13 felonies and his ouster from the mayor's office in 1985. But last year, the California Supreme Court threw out the 12 felony perjury counts against him. The remaining felony conspiracy charge was sent back to Superior Court for a new hearing.