More info about selectively compiling Google Play Services into an app can be found here:
https://developers.google.com/android/guides/setup
Scroll down the page to 'Selectively compiling APIs into your executable'.
Currently only Android Studio users can selectively compile Google Play Services.
There's 2 problems implementing this wish in b4a:
- Google don't make the various separate parts of Google Play Services available as normal downloads.
Instead the maven build process retrieves the required parts when you compile your app.
- The separate parts of the Google Play Services are in the newer .aar format, they're not traditional .jar libraries.
So b4a would have to support .aar library files.
I think .aar support in b4a has been requested before but am not sure...