In TU5, world generation was redesigned, causing the rainforest, seasonal forest, savannah, shrubland, and tundra biomes to be removed.
The Void was removed in TU5 due to the update making bedrock unbreakable.
The rose was removed in TU31/CU19/1.22/Patch 3 being replaced by the poppies
在wiki搜到的主机板移除的特性