Yesterday, federal prosecutors confirmed to the Daily News that they dropped the criminal probe into the finances of the Reverend Al Sharpton and his non-profit, the National Action Network. The feds, which had been investigating since December, has left the matter to the IRS, which estimates the non-profit owes "between $2 and $9 million" in back taxes (Sharpton has already paid back $1 million to the IRS). And he still owes a lot in city......