android: Drop empty main.jni.srcDirs from sourceSets

This was shown as a recommended step in Android Studio
when the update to Android Gradle Plugin 7.2.2 was
suggested:

> *Remove jni source directory from sourceSets*
>
> The jni block in an android
> sourceSet does nothing, and will be removed in Android Gradle Plugin
> version 8.0.0.

Change-Id: I3378926047d5ad86548d0bf800e022b74efb5e09
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/137942
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions