Merge "redirect adt guide to release notes to consolidate the deprecation...

Merge "redirect adt guide to release notes to consolidate the deprecation message. related deletion of file: https://critique.corp.google.com/#review/123463890 am: d6c76ddc am: 3152ead0 am: c26b8afd am: 6d6e6d24" into nyc-mr1-dev-plus-aosp
am: 8f69279e

* commit '8f69279e':
  redirect adt guide to release notes to consolidate the deprecation message. related deletion of file: https://critique.corp.google.com/#review/123463890

Change-Id: I33d52d6c1f3e70f89f849cc782efb1be1e386734