R1 and R2 build guides were identified as being nearly identical.
Based on this, they were consolidated into a single guide.
- Updated link to reference consolidated guide
- Updated index page to reference consolidated guide
- Removed old versioned guides
- Basic formatting cleanup (remove $prompts, lists, indentation)
Change-Id: I83aea4d76147fbc56d555dff3ce768737d15c4e2
Signed-off-by: Kristal Dale <kristal.dale@intel.com>