Previously jitsi only had optional dependencies being disabled by the
LIBRE build flag but a while ago they introduced optional exclusion
rules which don't transitively propagate to consumers of the library, so
instead we need to mirror the exclusion rules from the jitsi gradle file:
See: 7a64bf006e/android/sdk/build.gradle (L53)
Signed-off-by: Marcus Hoffmann <bubu@bubu1.eu>