MOSCOW (Reuters) – The Kremlin on Wednesday said it did not consider Boris Nadezhdin, a former opposition lawmaker seeking to run for president on an anti-war ticket, as a serious rival to President Vladimir Putin. Nadezhdin, 60, is currently trying to collect 100,000 signatures by the end of January to be registered as a candidate in the March 15-17 presidential election. In recent days, some Russians opposed to what Moscow calls its “special military operation” in Ukraine have queued up in the cold to offer their sigantures in his support. When asked on Wednesday if Nadezhdin was a rival who…