🗑 Remove delimiters in hashes

## Feature Request

**Description**
@benaloh proposed to not use any delimiters between parameters of hashes. The idea would be simplify the hash itself. It also removes confusion on whether any delimiters are used between parameters of hashes.

Another option would be to be more clear of exactly what the delimiters are and how they are used in documentation.

**Proposed Solution**

This would involve removing the delimiters shown in these lines:
https://github.com/microsoft/electionguard-python/blob/e35b68dc3175243ffaf872e9a0ea56c5b8a05830/src/electionguard/hash.py#L73

https://github.com/microsoft/electionguard-python/blob/e35b68dc3175243ffaf872e9a0ea56c5b8a05830/src/electionguard/hash.py#L100