Unused variables in validation module

[zhemingfan]

Certain parts of the validate module contains redundant code:
For example - count:
https://github.com/bcgsc/mavis/blob/develop_v3/src/mavis/validate/align.py#L417

Align_options for BWA-MEM, which doesn't use any additional align parameter.
https://github.com/bcgsc/mavis/blob/develop_v3/src/mavis/validate/align.py#L464

These should be removed or better documented.

[mattdoug604]

Hi @zhemingfan,

Just to clarify, did you encounter an error here or is this something you noticed could be be improved upon?

[zhemingfan]

For now, it's just enhancements.