So, I did some tests to remove it:
1.Normal removing- failed
2.Flooding disaster- failed miserably nearly destroyed my town
3.Placing ground over meteor- another failure
But there is one way to remove the godawful meteor, but you have to sacrifice your cities in the process, you gotta use the Slimes. Just put the slimes in the centre of meteor crater. The slimes are guaranteed to remove the meteor. For now.

Well, the only good thing about the meteor is now my villagers can worship it or get it as tourist attraction or something.