No need to copy SDK aars to sketch project

[codeanticode]

When the mode creates the gradle project to build the apk from the sketch's source, it copies the aar dependencies from the SDK location:

https://github.com/processing/processing-android/blob/master/src/processing/mode/android/AndroidBuild.java#L725

https://github.com/processing/processing-android/blob/master/src/processing/mode/android/AndroidBuild.java#L740

There is no need for this, since gradle will resolve the dependencies and download the package if needed.

A consequence is that mode would not need to download the android and google repositories at all. Additionally, according to Android's docs, the support libraries will not available through the SDK Manager

[codeanticode]

Addressed with ac9d258