Fix #239 #128 #127 #122 #121 #119, Requirements clean-up

[skliper]

Checklist (Please check before submitting)

• [x] I reviewed the Contributing Guide.
• [x] I signed and emailed the appropriate Contributor License agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution

• Fix #239
• Fix #128
• Fix #127
• Fix #122 (note issue #120 still exists)
• Fix #121
• Fix #119
• Part #120 (just removes duplicate element from requirement, doesn't fix issue)

Also removed old/obsolete requirements spreadsheet

Testing performed NA - Requirements only

Expected behavior changes None

System(s) tested on N/A

Additional context The update for #122 adds the timers at the channel level, so it's related to existing issue #120

Third party code None

Contributor Info - All information REQUIRED for consideration of pull request Jacob Hageman - NASA/GSFC

[astrogeco]

CCB:2022-05-25 APPROVED

[skliper]

a9f9f50 - clarifies the HK elements and the follow-on reset behavior per request.