LOS ANGELES (Reuters) – "Dancing with the Stars" co-host Brooke Burke said on Thursday that her surgery for thyroid cancer had gone well and that she had not lost her voice. "Thank God it's over. I'm clean, surgery went well & I can talk. Losing my voice was my biggest fear. Thx for all your prayers & light," Burke said in a Twitter posting. Burke, 41, a former winner of ABC-TV's popular celebrity ballroom dancing competition, announced in November that she had been diagnosed with thyroid cancer. …