We do not need courgette and have it excluded from our snapshot.

The original change doesn't explain why the dependency was added:
https://codereview.chromium.org/25909005/



Change-Id: I7d2c76343d1d223c2135e0b93facc279e74ff91c
Reviewed-by: Andras Becsi <andras.becsi@digia.com>