am 8ab9bbab: (-s ours) am 8187007e: am 17ffc380: Drop JB-MR2 SDK as of build #718977 in jb-mr2-dev.

* commit '8ab9bbabc2bf3f400a010e5eb21d4ef56b07c9cf':
  Drop JB-MR2 SDK as of build #718977 in jb-mr2-dev.