fix: removes duplicated windows metrics (#92)

[spencermckee]

Description

Removed the windows_hns_stats because they are already counted in the forward count.

There is no reference to the windows hns stats in the prod grafana dashboards.

Related Issue

#92

Checklist

• [x] I have read the contributing documentation.
• [x] I signed and signed-off the commits (git commit -S -s ...)
• [x] I have correctly attributed the author(s) of the code.
• [x] I have tested the changes locally.
• [x] I have followed the project's style guidelines.
• [x] I have updated the documentation, if necessary.
• [x] I have added tests, if applicable.