The San Francisco Chronicle OCTOBER 8, 1992, THURSDAY, FINAL EDITION Keeping Up With Sinead O'Connor The National Ethnic Coalition of Organizations in New York says it will donate $ 10 to charity on behalf of anyone who turns in a cassette or CD by Sinead O'Connor to protest her controversial antics on ''Saturday Night Live.'' ABC said that there are no plans to delete O'Connor's appearance tomor row night from the late-night ''ABC in Concert'' (1 a.m. on Channel 7), which originally was taped in July. NBC received numerous complaints this week about O'Connor's appearance on ''Saturday Night Live'' last weekend during which she tore up a picture of the pope.