Revert "Netty"

This reverts commit f0b55b71fffee10d904c3933430272aed5da4230.
Revert "BungeeCord Support"

This reverts commit 232719c2089ed6da7dde1469a15b61dff8633a35.

Conflicts:
	src/main/java/org/bukkit/craftbukkit/Spigot.java
	src/main/resources/configurations/bukkit.yml
Revert "Netty"

This reverts commit a852c1b22102089a825a3a1d33e5e2958445f3ff.

Conflicts:
	src/main/java/org/spigotmc/MultiplexingServerConnection.java
	src/main/java/org/spigotmc/netty/NettyNetworkManager.java
	src/main/resources/configurations/bukkit.yml
Revert "Make netty configurable."

This reverts commit add07c19ab948ee790b408f918a8fcb9b3bf1d45.

Conflicts:
	src/main/java/org/spigotmc/MultiplexingServerConnection.java