Flatworld structure generation doesn't work properly for villages.

When attaching generation variables under the preset generation to villages there is no noticeable effect.

Steps to recreate:

1. Create a new world
2. Select world type Superflat
3. Open the customize menu
4. Open the presets menu
5. Add variables to the village part of the preset text.
   • The variables should be added by adding a list of space-separated list of variables surrounded by parenthesis to the end of the 'village' text.
   • An example of this is "village(distance=9 size=200)", which should result in large and close villages.
6. Select use preset
7. Create new world

No changes seem to take affect.