Block entity flattening [$15]

[mastercoms]

This issue is part of the 1.13.x compatibility Epic.

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Description:

Once block properties and IDs are sorted, we can probably remove all block entity functionality for related entities (flower pots and note blocks).

Reference Documentation:

https://minecraft.gamepedia.com/Flower_Pot#History
https://minecraft.gamepedia.com/Note_Block#History

Relevant Code:

https://github.com/GlowstoneMC/Glowstone/blob/1.13/src/main/java/net/glowstone/block/entity/NoteblockEntity.java
https://github.com/GlowstoneMC/Glowstone/blob/1.13/src/main/java/net/glowstone/block/entity/state/GlowNoteBlock.java
https://github.com/GlowstoneMC/Glowstone/blob/1.13/src/main/java/net/glowstone/block/entity/FlowerPotEntity.java
https://github.com/GlowstoneMC/Glowstone/blob/1.13/src/main/java/net/glowstone/block/entity/state/GlowFlowerPot.java

Related to:

#3
#4

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