STOCKHOLM (Reuters) – Swedish telecom operator Telia is mulling a bid for Denmark’s TDC , Swedish business daily Dagens Industri reported on Thursday, citing unnamed sources. Copenhagen-listed TDC, with a market capitalization of 30 billion Danish crowns ($4.29 billion), would become the biggest acquisition ever by a listed Swedish company if the deal where to go through, according to the newspaper. Telia, valued just above four times higher with a market capitalization of 159 billion Swedish crowns ($17. …