am 19bc31c3: Merge "docs: remove old tutorial and sample pages from the sitemap" into eclair

Merge commit '19bc31c32d75ebebacd85cac2cf4c31108329613' into eclair-plus-aosp

* commit '19bc31c32d75ebebacd85cac2cf4c31108329613':
  docs: remove old tutorial and sample pages from the sitemap