DUBAI/VIENNA (Reuters) -Iran said on Wednesday it was removing two U.N. nuclear watchdog surveillance cameras at a uranium enrichment facility as the watchdog’s board prepared to pass a resolution criticising it for failing to fully explain uranium traces at undeclared sites. Tehran’s move was most likely either a shot across the bows before more drastic action or an early response to the draft resolution, which was being discussed at the 35-nation Board of Governors and diplomats said was likely to pass easily, with only Iran’s ally Russia publicly expressing strong opposition so far. The Uni…