Proposal for a Council Regulation suspending, for a period of six months, Council Regulation (EC) No 2151/1999 imposing a ban on flights between the territories of the Community and the Federal Republic of Yugoslavia other than the Republic of Montenegro or the Province of Kosovo, and amending Council Regulations (EC) No 1294/1999 and 2111/1999 as regards payments and supplies in relation to flights during the period of suspension