Update formatting and cleaning

[MichieldeB]

This merge will do the following:

• Clean most of the unused variables and functions.
• Make the use statements to only use what is needed.
• Update formatting of operators and arrays
• Make most capitalized words small
• Remove unneeded comments

[AldoHennink]

Did you check that this produces the identical data files as the current main branch? If so, then feel free to close this thread.