v4l2: v4l2_camera_proxy: Drop trace message from freeBuffers()

The freeBuffers() function is only called from vidioc_reqbufs(), which
already logs a trace message. Remove the duplicate.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

src/v4l2/v4l2_camera_proxy.cpp

@@ -445,8 +445,6 @@ int V4L2CameraProxy::vidioc_s_input(V4L2CameraFile *file, int *arg)
 
 void V4L2CameraProxy::freeBuffers()
 {
-	LOG(V4L2Compat, Debug) << "Freeing libcamera bufs";
-
 	vcam_->freeBuffers();
 	buffers_.clear();
 	bufferCount_ = 0;