[README.md] Updated.

README.md

@@ -31,20 +31,7 @@ The long-term goal of this project is to provide a viable alternative to Minecra
 - [Lua API](https://openminer.readthedocs.io/en/latest/)
     - [Core API](https://openminer.readthedocs.io/en/latest/lua-api-core/)
     - [Mod API](https://openminer.readthedocs.io/en/latest/lua-api-mod/)
-        - [Block](https://openminer.readthedocs.io/en/latest/lua-api-block/)
-        - [Item](https://openminer.readthedocs.io/en/latest/lua-api-item/)
-        - [Recipe](https://openminer.readthedocs.io/en/latest/lua-api-recipe/)
-        - [Sky](https://openminer.readthedocs.io/en/latest/lua-api-sky/)
-        - [Tree](https://openminer.readthedocs.io/en/latest/lua-api-tree/)
-        - [Biome](https://openminer.readthedocs.io/en/latest/lua-api-biome/)
-        - [Dimension](https://openminer.readthedocs.io/en/latest/lua-api-dimension/)
     - [GUI API](https://openminer.readthedocs.io/en/latest/lua-api-gui/)
-        - [Crafting widget](https://openminer.readthedocs.io/en/latest/lua-api-gui-crafting/)
-        - [Image](https://openminer.readthedocs.io/en/latest/lua-api-gui-image/)
-        - [Inventory data](https://openminer.readthedocs.io/en/latest/lua-api-gui-inventory-data/)
-        - [Inventory widget](https://openminer.readthedocs.io/en/latest/lua-api-gui-inventory/)
-        - [Progress bar](https://openminer.readthedocs.io/en/latest/lua-api-gui-progress-bar/)
-        - [Scroll bar](https://openminer.readthedocs.io/en/latest/lua-api-gui-scroll-bar/)
     - [C++ classes in Lua](https://openminer.readthedocs.io/en/latest/lua-api-cpp/)
 - [Network Protocol](https://github.com/Unarelith/OpenMiner/wiki/Network-Protocol)