These create only confusion as if they are actual different types
and it is within their usage already clear what they are about
because of the name of the variable or the function.
They are also nowhere aliased like this in any of the Portal
specification.
- Add new content + content key functionality for header by number
- Remove EpochRecords from the network
- Add pruning call for the EpochRecords + required deprecated
functionality
- Adjust getBlock and getBlockHashByNumber to make use of the
new functionality instead
- Delete content_verifier as it was only verifying the now
deprecated EpochRecord