chore: Clean up unused variables

chore: Clean up unused variables

- Change get_rust_struct_fields_from_definition to use `indent`

  All callers were maintaining it, get_rust_struct_from_definition had updated it but left it unused...

- Fix type annotations
- Remove dead code for `response`
- Remove dead code for `url`
- Remove dead code for `wire`
- Remove unused timing
- Remove unused variable `data`
- Remove unused variable `dropped`
- Remove unused variable `fileContent`
- Remove unused variable `message`
- Remove unused variable `method`
- Remove unused variable `name`
- Remove unused variable `numberOfQueries`
- Remove unused variable `output`
- Remove unused variable `pbMessageType`
- Remove unused variable `rcode`
- Remove unused variable `secondSerial`
- Remove unused variable `total`

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>