Log convolutions during Tensorflow GPU conv autotuning. Also removed the same...

Log convolutions during Tensorflow GPU conv autotuning. Also removed the same functionality from StreamExecutor.

We decided to move the loggings from SE to TF and XLA for several reasons:
* Proto formats already exist in TF and XLA that are suitable for logging. No need to create a third proto.
* In TF and XLA autotuning stage, we also do/plan to do correctness checking. We want to log the checking results.
* We are considering simplifying SE, so we prefer to keep SE simple for now.

PiperOrigin-RevId: 236889526