Merge "Remove static _book.yaml in favor of generated version (samples_navtree_data.cs)." into mnc-mr-docs am: 2974e94
am: 1c1a85bc

* commit '1c1a85bc82c5b99571cc8b5ae63b4fdf9dfa09c1':
  Remove static _book.yaml in favor of generated version (samples_navtree_data.cs).

Change-Id: I23ee22c39d7c9a0b18526d442078e471e78eb394