Removed the code associated with Limbo decay from EventHookContainer,
LimboBlock, and CommonTickHandler. DimHelper still has blocksToDecay
since removing it could cause deserialization failures. However, nothing
should actually use that list. I also removed several unused or
redundant methods (e.g. overriding methods and putting in exactly the
same code as in the super class), fixed indentation and renamed cryptic
variables. We should have a rule against allowing cryptic variable names
like "par2", even if they're inherited from Forge. I'll implement proper
limbo decay in the next commit.
98162f2839