He said we wont see it in Avengers 2, he never said we will never see it ever. I personally think that an Avengers/Inhumans movie is more likely and that was what Vin Diesel was talking about when he said "merging of brands" and his probably in the running to play Black Bolt.
MARVEL CINEMATIC UNIVERSE:
2015 - Ant-man
2016 - Doctor Strange, Thor: Ragnarok
2017 - Captain America: Hydra Reborn, Guardians Of The Galaxy: War of Kings
2018 - The Avengers: Infinity