Is the Reserve Bank of India done with its open-market bond sales to suck out liquidity?The biggest decline in benchmark yields in a year on Monday in reaction to the RBI canceling a debt sale would seem to suggest that, but traders should keep an eye on the central bank’s forward dollar book for clues.The RBI held $31 billion of forward dollars maturing over the next year as of Sept. 30, with $3.9 billion due by the end of December, the most recent data show.