Revert "Add api 21 app"
Revert "Add api 21 app"

This reverts commit cb7596734ea43332cb653a7a38d926f92aed42a2.

bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration