LONDON/OSLO (Reuters) - British Airways owner IAG said on Thursday it would not make a new bid for Norwegian Air and would sell its remaining stake in the budget airline, sending Norwegian's shares sharply lower.Shares in Norwegian, which has been under pressure over the past 18 months to control costs and shore up its balance sheet, dropped as much as 26 percent after IAG's statement to hit their lowest since November 2012."International Airlines Group (IAG) confirms that it does not intend..