Update to /external/robolectric rather than older /external/robolectric-shadows

Bug: 261728063
Test: atest of soong robolectric module
Change-Id: Ia6297abf3a189e89bb90bdc8f6a4af5e69968da8
1 file changed
tree: 0f2da5fa7d095595318278fb906488039a018939
  1. res/
  2. src/
  3. tests/
  4. Android.bp
  5. AndroidManifest.xml
  6. OWNERS
  7. proguard.flags