Fix #1308, Remove redundant/inconsistent comments (/* end of function */, /* end if */ etc.) and clean up empty lines.

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to [email protected] and copied [email protected].

Describe the contribution
Fixes #1308
Removes redundant and inconsistent comments (e.g. /* end of function */, /* end if */, function name in function header comments).
There were also a few cases of unnecessary empty lines (e.g. on the last line before the closing brace of a function) and also missing empty lines (e.g. between functions) which were corrected. Some of these empty lines trigger the CI format checks.
I've left the commits separated for now to make life easier for whoever reviews this. I can squash them if/when this is ready for merge.

Testing performed
None (comment and whitespace changes only).

Expected behavior changes
No impact on behavior.
These updates will reduce clutter and inconsistency in the code, improving readability.

Contributor Info
@thnkslprpt

[dzbaker]

@thnkslprpt CCB 13 October 2022: Approved pending squash of commits and ensuring that commit message follows format and internal review of changes.

[thnkslprpt]

@thnkslprpt CCB 13 October 2022: Approved pending squash of commits and ensuring that commit message follows format and internal review of changes.

Squashed together now mate.