am 25f8bdf4: partial revert "Support xxxhdpi icons & delete unused icons"

* commit '25f8bdf4f244d776f13e4af353eb9eb489e613f2':
  partial revert "Support xxxhdpi icons & delete unused icons"
tree: cb1253b235a46d4592bb429ac3838eb7a13fec13
  1. res-common/
  2. src/
  3. tests/