Merge "Delete everything from /sdk directory that is now in /studio. Redirects are in https://critique.corp.google.com/#review/121297240" into mnc-mr-docs am: 84bf8073a8 am: 34561c73a2
am: c1a9241a37

* commit 'c1a9241a373d9f3594e284486ad2544c143aff3f':
  Delete everything from /sdk directory that is now in /studio. Redirects are in https://critique.corp.google.com/#review/121297240

Change-Id: I8021d782d403e5a281280436a9de779ddd03d2b9