Redundant comments (/* end of function */, /* end if */ etc.) and clean up empty lines.

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I performed a cursory search to see if the bug report is relevant, not redundant, nor in conflict with other tickets.

Describe the bug
Copy of nasa/to_lab#68 and nasa/sample_app#111
There are quite a few redundant comments in the code, such as:

• /* end of function */-type comments
• #endif /* BP_IO_H */-type comments
• function header comments which include the function name

Expected behavior
Remove redundant comments to reduce clutter and inconsistency in the code, and improve readability.

Reporter Info
@thnkslprpt