Merge \"Merge \\"Delete the NDK docs from Git. They\\'re now in Piper, as per: https://critique.corp.google.com/#review/126357681\\" into nyc-dev am: 5460fef952\" into nyc-mr1-dev
am: b50f3fb035

Change-Id: Iabd79a0d7a207d5fce7861a517509cd098bcb8a7