vlc-debian-android-3.0: clean used packages

* subversion is not needed anymore
* ragel was found twice
* automake was used from testing
* protobuf-compiler is not used, we build our own since a3d8d80e
* python3 alone should be sufficient
* libwebkitgtk-1.0-0 should not be needed

Similar to 99748483 for 3.0

* subversion is not needed anymore
* ragel was found twice
* automake was used from testing
* protobuf-compiler is not used, we build our own since a3d8d80e
* python3 alone should be sufficient
* libwebkitgtk-1.0-0 should not be needed
* rpm2cpio  should not be needed
* libgsm1-dev should not be needed

Similar to 99748483 for 3.0