Update Sdk auto download test to use API 31

See Icf3fac9fa2ecacde30b5883190421e9f127b60cf

Manually removed unused windows and mac artifacts

Bug: 203802678
Test: See Icf3fac9fa2ecacde30b5883190421e9f127b60cf
Change-Id: I8acf1223ba413a2140c6b69d07fc641a4175548a
14 files changed
tree: c694c703f7164445aeb3a2284c116eb02286d875
  1. dl.google.com/
  2. BUILD