Remove generated docs from repo

layers/place/README.md

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-# place
-
-The place layer consists out of [countries](http://wiki.openstreetmap.org/wiki/Tag:place%3Dcountry),
-[states](http://wiki.openstreetmap.org/wiki/Tag:place%3Dstate) and [cities](http://wiki.openstreetmap.org/wiki/Key:place).
-Apart from the roads this is also one of the more important layers to create a beautiful map.
-We suggest you use different font styles and sizes to create a text hierarchy.
-
-## Fields
-
-- **name_en**: The english `name:en` value if available.
-- **name**: The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value of the POI.
-- **rank**: Countries, states and the most important cities all have a `rank` to boost their importance on the map.
-The `rank` field for counries and states ranges from `1` to `6` while the `rank` field for
-cities ranges from `1` to `10` for the most important cities and continues from `10` serially based
-on the local importance of the city (derived from population and city class).
-Use the `rank` field to build a text hierarchy.
-The rank value is a combination of the Natural Earth `scalerank`, `labelrank` and `datarank` values for countries
-and states and for cities consists out of a shifted Natural Earth `scalerank` combined with a local rank
-within a grid for cities that do not have a Natural Earth `scalerank`.
-- **class**: Distinguish between `country`, `state` and other city classes like
-`city`, `town`, `village`, `hamlet`, `suburb`, `neighbourhood` or `isolated_dwelling`.
-Use this to separately style the different places according to their importance (usually country and state different
-than cities).
-
-## Mapping
-
-![](mapping.png)
-
-