remove some debugging
remove some debugging

leiyangyou/libvips,lovell/libvips,wishabi/libvips,leiyangyou/libvips,jcupitt/libvips,jcupitt/libvips,lovell/libvips,mcanthony/libvips,leiyangyou/libvips,mcanthony/libvips,mcanthony/libvips,lovell/libvips,wishabi/libvips,lovell/libvips,jcupitt/libvips,leiyangyou/libvips,wishabi/libvips,jcupitt/libvips,mcanthony/libvips,wishabi/libvips