VIENNA (Reuters) -Austria is following through on a “use it or lose it” threat to eject Russia’s Gazprom from its large Haidach gas storage facility for systematically failing to fill its portion of the capacity there, the government said on Wednesday. Austria obtains around 80% of its gas from Russia but since the war in Ukraine it has accused Moscow of weaponising that supply and has been seeking alternatives. Fearing that Russia will cut it off, it is racing to fill its gas storage facilities, which are at just under half their capacity. Since Gazprom has not been filling its portion of the…