Supercell are not allowing users to reset their village in game. This is due to their policy. If you want to reset your game then please watch the video below for iOS and follow the instructions below for Android.
Requires a factory reset, you can restore from backup:
Go to: Device Settings > Application Manager > Clash of Clans > Clear Data > OK.
You will need to make a NEW G+ account for the new village to be linked to if your old village was already linked, to do so Goto: Device Settings > Accounts > Add Account > Google > New. Then make the account. After making it open up Clash and you will be greeted with the tutorial. After going through it be sure to link your village to the new G+ account you created.