AndroidPlugin: Remove dependency on qbs plugin

Task-number: QTCREATORBUG-10288
Change-Id: I2328076a7b5179e4d63becb616433627270089c4
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>