Yes the app has been removed.
 As time shows, the idea of redistributing libraries for Android via separate app seems to be bad. The platform and the library changes so compatibility preserving becomes too difficult and time consuming.
 We suggest using static linking with OpenCV where possible. OpenCV Manager apk is still available in our SDK for Android on SourceForge. For Java users, I believe it is possible to build custom OpenCV SDK for Android configuration with reduced set of modules by providing BUILD_LIST cmake option and utilizing build_sdk script.
 
cc @mshabunin, @alalek (hey, we need better guidelines, where this is going !)
i'm no longer using android, and i'm also no expert on this, but i think, you should use "static" (or "debug") initialization of the opencv libs (which will use the libs from your sdk, not from the opencv manager app)