Delete Android JUnit code & enable GRADLE test runner per default.

This should help us avoid problems related to the upcoming PLATFORM
merge happening next week.

Bug: 173775738
Bug: 165193589
Test: this is a cleanup change, GRADLE tests are to come  in future
changes.

Change-Id: I694bbbd18da437dacb561c83cb9bff48a36133e0
42 files changed
tree: d82f54c2dd811b0aadb80a8a8bb990c3982e159e
  1. .idea/
  2. adt-testutils/
  3. adt-ui/
  4. adt-ui-model/
  5. analytics/
  6. android/
  7. android-adb/
  8. android-common/
  9. android-debuggers/
  10. android-kotlin/
  11. android-lang/
  12. android-lang-databinding/
  13. android-layout-inspector/
  14. android-npw/
  15. android-plugin/
  16. android-templates/
  17. android-test-framework/
  18. android-test-retention/
  19. android-transport/
  20. android-uitests/
  21. androidx-integration-tests/
  22. apkanalyzer/
  23. app-inspection/
  24. artwork/
  25. assistant/
  26. bleak/
  27. build-attribution/
  28. build-common/
  29. compose-designer/
  30. compose-ide-plugin/
  31. connection-assistant/
  32. dagger/
  33. databinding/
  34. deploy/
  35. designer/
  36. designer-perf-tests/
  37. emulator/
  38. gradle-dsl/
  39. gradle-tooling/
  40. ide-perf-tests/
  41. intellij.android.compose-common/
  42. jps-plugin/
  43. kotlin-integration/
  44. layout-inspector/
  45. layout-ui/
  46. layoutlib/
  47. layoutlib-loader/
  48. layoutlib-native/
  49. lint/
  50. manual-tests/
  51. mlkit/
  52. native/
  53. native-symbolizer/
  54. nav/
  55. observable/
  56. observable-demo/
  57. observable-ui/
  58. old-agp-tests/
  59. profilers/
  60. profilers-android/
  61. profilers-atrace/
  62. profilers-ui/
  63. project-system/
  64. project-system-gradle/
  65. project-system-gradle-psd/
  66. project-system-gradle-sync/
  67. resources-base/
  68. room/
  69. rt/
  70. sdk-updates/
  71. smali/
  72. studio/
  73. studio-updater/
  74. swingp/
  75. sync-perf-tests/
  76. transport-database/
  77. uitest-framework/
  78. ultimate/
  79. updater-ui/
  80. whats-new-assistant/
  81. wizard/
  82. wizard-model/
  83. .editorconfig
  84. .gitignore
  85. get_aosp_changes.sh
  86. icon-robots.txt
  87. README.md
README.md