Remove stale sections of the SDK project

[gabog]

There are several things in the SDK project that seem stale and can probably be removed:

• [ ] common/Telemetry
• [ ] common/Transcripts
• [ ] docs. This area needs to be revisited and cleaned up if needed
• [ ] dri. Are we still using this or we run everything out of the PowerBI report?
• [ ] parsers/LU not sure if this is still being used
• [ ] schema, this is being used, we need to make sure that is is current
• [ ] specs, there may be some stale content here, needs review
• [ ] tools/changelog, I think we use this one for release notes right?
• [ ] README.md, need to review this and make sure is current